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Thank you for coming

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and Ruby Conf is always great

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and a keynote make me depressed (laughs)

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You know I'm a programmer

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I'm a language designer

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so you know, my main tasks should be is designing
language

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a great language

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I admit that I did great things

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you know

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that influenced

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so many people all around the world

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including you guys

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so I'm pretty happy with it

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but still

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you know

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I'm not really a great presenter

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nor

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I'm very

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I'm not really good at english

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that always makes me nervous

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anyway, today I'm going to talk about the
fantasy land

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ok

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this way

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fantasy land

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that is a place being away from reality

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the where the unicorn lives

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in Japanese it is called

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genjitsu-tohi

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which is escaping from reality

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my dictionary says that is escapism

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is that correct word or something

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so for example

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so the starting cleanup right before the deadline

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is kinda like escapism

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starting debuging mruby right before the keynote

36
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is escapism

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that is what I did

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so today

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I'm going to talk about

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oh excuse me

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two fantasy lands

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the first one is kinda like a distopia

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in 1990

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I graduated from university

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I feel old

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I was hired by a software development company

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which does, which did some kind of enterprise
software

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in that, that age

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the software development is totally different
from now

50
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so we had some kind of three year project
or something

51
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from the huge company or huge government department

52
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we had some kind of analysis for months or
even years

53
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then we wrote some kind of very detailed documentation

54
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this abstract documentation

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the detailed documentation

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then we code

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which is the translation from natural language
to computer language

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so the process was driven by waterfall process

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so the company's decision was very, very,
very conservative

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so at that time I felt something was wrong

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but I couldn't explain why

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just because it was so natural

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everyone was doing it that way in software
development

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back then

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so I couldn't explain why

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everyone was doing that

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it is quit difficult to tell what is wrong

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when everyone is doing bad things

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right

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so yea I couldn't imagine what was right and
what was wrong

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so after more than 20 years of experience

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I was a pretty experienced programmer

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ah maybe

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now I understand, I now understand what was
wrong

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we were wrong in software development

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that depends on some false assumptions

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we were depending on such false assumptions

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assumption number one

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we know what we make

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back then we believed we are knowing what
we are going to make

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in reality we don't know what software is

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so software does not have any physical entity

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so it is not limited by physical law

84
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so it can be very, very easily complex

85
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so, for example, if I were a building architect

86
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so I design a building like this hotel

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so we need to think about, for example

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about weather, or the strengths of the concrete,

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or iron, or something, the building materials

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then the strength of the building itself can
be

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calculated by physically, easily simulated

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but you know

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when we starting developing software it is
easy, like

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"hello world"

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that's quite easy

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there is no room for bug

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but the software is getting bigger and bigger

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so it's quite difficult to understand say
10,000 lines of code

99
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but now days software is so huge

100
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like if I had a Prius here, it is an automobile,

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it has tons of lines of code, maybe hundreds
of lines of code, tons of hundreds

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maybe millions of code

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so it's like, as a software developer, you
can imagine how difficult to ensure no bugs

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in the millions of lines of code

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yeah

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I'm sure I cannot do that

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so, the software can be a most complex creation,
maybe

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and no document but code can explain the details

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so the, we believe we knew what we were going
to make

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but in reality, we didn't

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false assumption number two, which is

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we know what we want

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in reality, it's quite difficult to imagine

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you know, in a waterfall age I write a code
(?? 00:07:27.16) with sophistication

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and I give that sophistication to our client

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then clients said, OK, then we started development

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a few weeks, few months, few years later

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the software was finished

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then I wrote

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if we wrote it to the client, then

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can you imagine what the client said?

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it's not what I wanted

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but, they said yes, this is OK

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but, afterwards, they said, this is not what
I wanted

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even, I admit, I said OK

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but, you know, we couldn't imagine what the
software appears in reality

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so, like a stupid boss says ?? (00:08:23.56)
to the client

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yeah, I complained a lot

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I happened to complain so often, back then

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but one day, I asked my colleague to create
some kind of software

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at that time I was so busy, so I

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I explained what I want to my colleague

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then he created the software, then back to
me

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and I said, this is not what I wanted! (laughs)

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stupid me

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I said I don't know why we should make too
maximize business value

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we couldn't, no, we couldn't understand what
is gonna bring you success

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so we are stupid, too

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so, false assumption number three

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which is

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the situation will not be changed

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in reality, we don't know the future

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we're not prophets

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we have wrong forecasts

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so yeah, in this technology field, we have
a lot of

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we're gonna have this technology, we're gonna
have this, too

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we're gonna conquer the world, so

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most forecasts will be wrong

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so let's face it

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we don't know anything

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20 years ago

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we should have admitted our ignorance, but
we couldn't

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so instead, we ignored our ignorance

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so, when we know little, we have very few
choices, so

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choice number one is a conservative strategy

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learn from the past

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so, this is very good strategy

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and the politicians often take

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conservative

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but it is pretty good unless factors don't
change

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unfortunately not in the IT industry, so

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we change a lot, the situation will change
drastically, day by day

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so, in our industry it's kind of like the
quote from Red Queen in Alice in Wonderland

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"Now, here, you see, it takes all the running
you can do, to keep in the same place.

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If you want to get somewhere else, you must
run at least twice as fast as that!"

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It's our situation, here

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probably, yeah

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it's our situation

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we have to run as fast as we can to be in
the same place

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so, strategy number two is

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ostrich algorithm

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in the ostrich algorithm

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so when the sandstorm comes, ostrich dig in
their head into sand

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and wait until the sandstorm ends

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so the, the ostrich strategy is ignore everything,
and wait

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it is a good strategy

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only when situations will recover

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so sandstorms will end

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so, we will have the clear skies and we

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we can enjoy our climate again

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but, you know, in our industry

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that's not going to happen

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where the situation will change and change
and change and not recover

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so we, we cannot go back to the main frames

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we can go back to the, you know, eighty, fifty
years or something

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so we must keep forward, keep going forward

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so the ostrich algorithm is very good strategy
in the past

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when the situation will recover

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so the, this strategy, this algorithm, is
written in our instincts

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00:13:06,310 --> 00:13:10,690
so we are so easy to choose that strategy

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but, otherwise, when the situation will not
recover

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it's kind of like the living in the fantasy
land

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so, going forward with false assumptions is
kind of like living in the fantasy land

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so, ignoring reality

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we had two strategies

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conservative strategy and ostrich algorithm

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which strategy do we take?

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neither of them are good

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20 years ago

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our goal was to create the software, somehow

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having computerized system is the power

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it is so powerful, the computer itself is
so powerful, comparing to the human creation

203
00:14:05,490 --> 00:14:06,190
??(00:14:05.13)

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00:14:06,190 --> 00:14:12,550
so it has great power, so software development
was pretty expensive back then

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00:14:12,550 --> 00:14:14,480
the computers were expensive

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00:14:14,480 --> 00:14:16,720
the network connection was expensive

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00:14:16,720 --> 00:14:21,850
the failure never be allowed in that age

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00:14:21,850 --> 00:14:26,720
so they needed to optimize, not to fail

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00:14:26,720 --> 00:14:28,390
at the cost of satisfaction

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00:14:28,390 --> 00:14:33,850
so I don't care you are satisfied our software
or not

211
00:14:33,850 --> 00:14:40,850
but I can re-use some kind of the power of
computers with that computerized system

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00:14:42,600 --> 00:14:44,100
so everyone was dreaming

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00:14:44,100 --> 00:14:48,190
we believed that the only way to create software

214
00:14:48,190 --> 00:14:52,060
we tried hard to believe that was the only
way

215
00:14:52,060 --> 00:14:54,270
but 20 years later, now

216
00:14:54,270 --> 00:15:00,020
our goal is not really, not just create a
software

217
00:15:00,020 --> 00:15:02,810
our goal is to create the great software

218
00:15:02,810 --> 00:15:09,810
you know, nowadays everyone has computer,
everyone uses software

219
00:15:09,920 --> 00:15:15,330
so, mere possession is no longer the power

220
00:15:15,330 --> 00:15:17,529
everyone has computer, everyone has software

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so we're saved

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00:15:19,880 --> 00:15:24,839
to differentiate, to have the power over others

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00:15:24,839 --> 00:15:30,209
we need to create great software, we need
great software

224
00:15:30,209 --> 00:15:36,520
we got to create great software, but how?

225
00:15:36,520 --> 00:15:38,670
of course we don't know

226
00:15:38,670 --> 00:15:40,279
we have made false assumptions

227
00:15:40,279 --> 00:15:42,360
admit our ignorance

228
00:15:42,360 --> 00:15:46,899
but, but there's good news, there's good news

229
00:15:46,899 --> 00:15:49,200
the computers are cheaper

230
00:15:49,200 --> 00:15:52,110
cloud computing is even cheaper

231
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a network connection is cheaper now

232
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and ubiquitous

233
00:15:55,610 --> 00:15:57,019
everyone has imagination

234
00:15:57,019 --> 00:16:00,300
even in this room

235
00:16:00,300 --> 00:16:01,959
software development is cheaper

236
00:16:01,959 --> 00:16:04,260
comparing to twenty-something years ago

237
00:16:04,260 --> 00:16:08,660
so, we can be more productive, more abstract

238
00:16:08,660 --> 00:16:12,149
and we now have better tools and a better
language

239
00:16:12,149 --> 00:16:19,149
like Ruby

240
00:16:24,720 --> 00:16:26,980
and we have a lot of open source software

241
00:16:26,980 --> 00:16:29,360
so we can rely on that kind of software

242
00:16:29,360 --> 00:16:31,339
we can learn from that software

243
00:16:31,339 --> 00:16:38,339
so, old days, it is quite difficult to study
from the real source source code ?? (00:16:41.91)

244
00:16:44,529 --> 00:16:50,620
if you would like to learn about the operating
system

245
00:16:50,620 --> 00:16:57,620
so you cannot access to the source code of,
say, Microsoft Windows

246
00:16:59,810 --> 00:17:04,579
or the ?? (00:17:00.68) or some other operating
system

247
00:17:04,579 --> 00:17:09,179
you, you can access through Linux?? (00:17:08.34)

248
00:17:09,179 --> 00:17:12,409
or the very old version of Linux

249
00:17:12,409 --> 00:17:15,269
but not the real software

250
00:17:15,269 --> 00:17:18,010
but nowadays you can access the Linux

251
00:17:18,010 --> 00:17:23,209
a whole bunch of Linux code and you have tons
of operating systems

252
00:17:23,209 --> 00:17:27,420
and that is used in reality

253
00:17:27,420 --> 00:17:29,740
and

254
00:17:29,740 --> 00:17:33,960
you can use some software in your system

255
00:17:33,960 --> 00:17:37,299
you can learn from that source code

256
00:17:37,299 --> 00:17:44,299
so it's much easier for us to learn and create
the great software

257
00:17:46,710 --> 00:17:49,960
and we can now have the collaboration via
internet

258
00:17:49,960 --> 00:17:55,320
it's, it's changed the game

259
00:17:55,320 --> 00:18:00,320
so, 20 years ago, soon after I graduated the
university

260
00:18:00,320 --> 00:18:07,179
I was at the point I was working as a professional
programmer in enterprise software

261
00:18:07,179 --> 00:18:14,179
I was prohibit to write email abroad, outside
Japan

262
00:18:14,760 --> 00:18:18,220
only 20 years ago - not two hundred years
ago

263
00:18:18,220 --> 00:18:25,220
so, yeah, I, when I was a university student

264
00:18:26,100 --> 00:18:28,640
I wrote some kind of software, free software

265
00:18:28,640 --> 00:18:35,640
it was distributed by, it was quite minor,
you know client on top of ?? (00:18:32.73)

266
00:18:36,130 --> 00:18:43,130
and, I got to mail from some other guys, probably
in the States

267
00:18:43,700 --> 00:18:46,490
I don't remember quite

268
00:18:46,490 --> 00:18:47,730
but

269
00:18:47,730 --> 00:18:52,460
I tried to reply, and soon after that I got
error mail

270
00:18:52,460 --> 00:18:59,460
your company did not pay money to the internet
connection

271
00:19:00,450 --> 00:19:04,809
international internet connection, I mean

272
00:19:04,809 --> 00:19:10,370
so, I forwarded that reply to my friend in
the university

273
00:19:10,370 --> 00:19:17,370
the university pay that kind of bill so that
he could receive the mail

274
00:19:19,850 --> 00:19:23,490
it was quite awkward corresponding, you know

275
00:19:23,490 --> 00:19:26,720
he wrote mail to me then I did not respond

276
00:19:26,720 --> 00:19:30,710
so that, the friend respond because of me
or something like that

277
00:19:30,710 --> 00:19:37,710
but, you know, now we can connect to everyone
all over the world

278
00:19:37,980 --> 00:19:44,380
so we can access through Japan, China, Moscow,
everywhere

279
00:19:44,380 --> 00:19:47,750
so we can now collaborate over the internet

280
00:19:47,750 --> 00:19:54,750
so, that allows us to do some kind of social
coding, so

281
00:19:55,010 --> 00:19:59,350
so, GitHub changed everything

282
00:19:59,350 --> 00:20:06,350
so these good things bring up the new fantasy
land

283
00:20:07,049 --> 00:20:09,520
the new perspective

284
00:20:09,520 --> 00:20:16,520
so we can ignore gory detail of the hardware
or the

285
00:20:17,140 --> 00:20:21,840
and the new operating system, for most of
the cases

286
00:20:21,840 --> 00:20:28,030
we can stand on the shoulders of giants, so
we can use the great huge software

287
00:20:28,030 --> 00:20:35,030
of the operating system, framework, language,
the tools, editors

288
00:20:36,220 --> 00:20:37,419
so a lot of the things

289
00:20:37,419 --> 00:20:44,419
so we can do great things with very little
effort, comparing to the past

290
00:20:45,470 --> 00:20:52,470
so we can do greater work than our real ability,
real power

291
00:20:54,040 --> 00:21:01,040
so, I think the genius 20 years ago does not
recur enough, is not strong enough

292
00:21:04,919 --> 00:21:09,500
they are almost fame ?? (00:21:05.97), the
ability as a human, in genius

293
00:21:09,500 --> 00:21:16,080
but, now, we can rely, we can collaborate,
we can collaborate over internet

294
00:21:16,080 --> 00:21:22,929
we can collaborate on top of open source software,
free software, so

295
00:21:22,929 --> 00:21:26,200
we can do greater works than our past

296
00:21:26,200 --> 00:21:30,179
but that does not mean we are greater

297
00:21:30,179 --> 00:21:32,890
so the situation has changed

298
00:21:32,890 --> 00:21:38,040
we can have power, we can have more freedom

299
00:21:38,040 --> 00:21:40,870
we can have more joy in software

300
00:21:40,870 --> 00:21:47,870
so I remember that the, working on the enterprises
software was not fun

301
00:21:48,419 --> 00:21:55,419
so, it's quite boring, so translating human
sophistication

302
00:21:55,600 --> 00:22:01,360
in human language into the computer language
was so boring

303
00:22:01,360 --> 00:22:07,799
you know, that sophistication once said that,
OK, assign this value to this variable

304
00:22:07,799 --> 00:22:10,990
or something like that, so

305
00:22:10,990 --> 00:22:17,990
why these kind of genius don't write the code
by themselves?

306
00:22:18,870 --> 00:22:22,429
it was quite boring when I was ?? (00:22:49.51)

307
00:22:22,429 --> 00:22:29,429
so now, we can do by ourselves, we can have
joy in our programming

308
00:22:29,860 --> 00:22:31,740
it's kind of like engineers' heaven

309
00:22:31,740 --> 00:22:36,530
that's where we are, and that's why we are
here

310
00:22:36,530 --> 00:22:43,530
but wait, it's still not real

311
00:22:44,820 --> 00:22:49,720
in reality is as conflict as past

312
00:22:49,720 --> 00:22:55,650
so, who maintains this fantasy land?

313
00:22:55,650 --> 00:23:00,730
in reality, we cannot just ignore mess, so
we don't need

314
00:23:00,730 --> 00:23:07,730
something, so, we can ignore or just forget

315
00:23:08,980 --> 00:23:14,390
but something's got to maintain this kind
of a mess

316
00:23:14,390 --> 00:23:21,390
so, it's, so somebody's got to work on that
kind of mess

317
00:23:23,150 --> 00:23:25,080
garbage collectors

318
00:23:25,080 --> 00:23:29,160
no, that's not the garbage that you imagine

319
00:23:29,160 --> 00:23:36,160
for that kind of topic you can go to to the
Koichi talk

320
00:23:37,070 --> 00:23:43,500
so, by the term garbage collector, I meant
this (picture)

321
00:23:43,500 --> 00:23:50,500
and, we have to rely on this kind of people
in our daily life

322
00:23:51,990 --> 00:23:55,040
even in our programming

323
00:23:55,040 --> 00:24:00,410
without them, we would become mess

324
00:24:00,410 --> 00:24:02,809
so welcome to the desert of reality

325
00:24:02,809 --> 00:24:06,809
we rely on garbage collectors

326
00:24:06,809 --> 00:24:10,280
so we'd better appreciate them

327
00:24:10,280 --> 00:24:17,280
we rely on a lot of garbage collectors who
keep the fantasy land

328
00:24:19,320 --> 00:24:22,590
who created your favorite language?

329
00:24:22,590 --> 00:24:25,070
the garbage collector

330
00:24:25,070 --> 00:24:30,780
or, who created your favorite gems?

331
00:24:30,780 --> 00:24:34,820
gem creators, raise your hands

332
00:24:34,820 --> 00:24:38,429
you have to appreciate them (applause)

333
00:24:38,429 --> 00:24:43,669
thank you

334
00:24:43,669 --> 00:24:47,350
who created your favorite frameworks?

335
00:24:47,350 --> 00:24:54,350
who wrote your favorite books? book writers,
raise your hand (applause)

336
00:24:57,130 --> 00:25:04,130
who created your opensource software, we have
tons of open source software

337
00:25:05,750 --> 00:25:07,980
in and out our Ruby community

338
00:25:07,980 --> 00:25:09,440
so we have to appreciate them

339
00:25:09,440 --> 00:25:15,620
so appreciation and respect is the key, I
believe

340
00:25:15,620 --> 00:25:19,299
the key to the open source community

341
00:25:19,299 --> 00:25:22,240
the key to the moving forward

342
00:25:22,240 --> 00:25:24,460
so open source community is kind of like a
shark

343
00:25:24,460 --> 00:25:25,770
(laughs)

344
00:25:25,770 --> 00:25:32,770
we need to keep moving forward, or die

345
00:25:35,090 --> 00:25:36,730
(applause)

346
00:25:36,730 --> 00:25:43,730
so, we have to, and I would advise to you,
keep moving forward

347
00:25:44,960 --> 00:25:51,630
so you have to run as fast as you can to stay
in the same place

348
00:25:51,630 --> 00:25:58,630
and you have to run twice as fast as that
to move forward

349
00:25:59,039 --> 00:26:04,030
so run fast, try often, fail early

350
00:26:04,030 --> 00:26:08,020
keep moving forward, yes, that is my message

351
00:26:08,020 --> 00:26:11,630
and in addition, appreciation is not enough

352
00:26:11,630 --> 00:26:18,270
so, we are not creative to the gem writers

353
00:26:18,270 --> 00:26:22,679
we are not creative to the language designer

354
00:26:22,679 --> 00:26:29,150
we are not creative to the open source software
programmers

355
00:26:29,150 --> 00:26:32,289
so we became one

356
00:26:32,289 --> 00:26:39,289
so, take the red pill

357
00:26:41,950 --> 00:26:45,210
so, you can come join us

358
00:26:45,210 --> 00:26:49,690
if you are a programmer, that's fine, that's
fine you're a programmer

359
00:26:49,690 --> 00:26:54,539
you take a great step to create something

360
00:26:54,539 --> 00:26:57,210
you know, the programmer is a creator

361
00:26:57,210 --> 00:27:04,210
so, you create software, then by your creation

362
00:27:05,530 --> 00:27:09,720
the world will be better, I hope, I really
will hope

363
00:27:09,720 --> 00:27:12,880
the world will be better by your creation

364
00:27:12,880 --> 00:27:18,450
you programmers, you create soft ware, and
you make the world better

365
00:27:18,450 --> 00:27:25,450
but, but you might still living in the fantasy
land

366
00:27:27,690 --> 00:27:31,910
which is kept by the garbage collectors

367
00:27:31,910 --> 00:27:37,020
and if you're willing, I'm not forcing you

368
00:27:37,020 --> 00:27:40,490
if you're willing, you can be one of them

369
00:27:40,490 --> 00:27:44,630
you can be a garbage collector

370
00:27:44,630 --> 00:27:46,710
you don't want?

371
00:27:46,710 --> 00:27:49,309
but this garbage collector is much cleaner

372
00:27:49,309 --> 00:27:56,309
so, be a garbage collector, take part in keeping
the fantasy land

373
00:27:56,840 --> 00:28:03,840
so this fantasy land, unlike the first one,
which ignores everything

374
00:28:04,860 --> 00:28:11,860
so this fantasy land, we currently enjoy is
our result of the effort of the long time

375
00:28:15,570 --> 00:28:20,350
maybe twenty, forty, fifty years of the great
effort of the garbage collectors

376
00:28:20,350 --> 00:28:27,350
so, I, I invite you guys to take part in keeping
the fantasy land

377
00:28:33,809 --> 00:28:38,640
and for example, so you can join the CRuby

378
00:28:38,640 --> 00:28:45,640
even in writing some reporting some issues
the bug trackers or something like that

379
00:28:46,840 --> 00:28:53,840
so, once you know what we garbage collectors
doing behind the CRuby

380
00:28:54,980 --> 00:29:01,980
you can take the, that session

381
00:29:04,049 --> 00:29:11,049
so, again, so I ask you to create a great
fantasy land

382
00:29:18,140 --> 00:29:25,140
currently we enjoy, and it can be even greater
with your effort

383
00:29:25,330 --> 00:29:30,570
so you can do as much, many things, so writing
software on top of Ruby on Rails

384
00:29:30,570 --> 00:29:32,220
or the ?? (00:22:49.51) or something like
that

385
00:29:32,220 --> 00:29:39,220
that will enrich the community and communicate
with blogs, twitter and social net, social

386
00:29:41,580 --> 00:29:41,929
coding

387
00:29:41,929 --> 00:29:48,929
or even, participate in the community, like
the GitHub is our friend

388
00:29:49,990 --> 00:29:55,150
you can do many things, submit bugs, write
documents on the

389
00:29:55,150 --> 00:29:58,159
you know, have a presentation in the conference,
you can

390
00:29:58,159 --> 00:30:05,159
or, write a small piece of software, write
a part in the, submit a ?? (00:31:05.62)

391
00:30:05,240 --> 00:30:11,260
so, so many things you can do, but in any
way create

392
00:30:11,260 --> 00:30:16,179
and try to keep a great fantasy land that
we enjoy

393
00:30:16,179 --> 00:30:16,929
change the world

394
00:30:16,929 --> 00:30:23,929
so, I believe we've changed the world in better
ways

395
00:30:24,690 --> 00:30:29,230
in the past, say, ten years, so

396
00:30:29,230 --> 00:30:33,110
a lot of people in this conference, in the
past Ruby conferences

397
00:30:33,110 --> 00:30:40,110
so presented the great things, so now I expect
even more great work will be introduced in

398
00:30:44,510 --> 00:30:48,200
this conference

399
00:30:48,200 --> 00:30:55,200
so do not be a just a listener

400
00:30:55,360 --> 00:31:01,190
do not be a passive receiver of information

401
00:31:01,190 --> 00:31:08,190
so you hear something in this conference,
you learn something, take action

402
00:31:11,270 --> 00:31:12,909
change the world

403
00:31:12,909 --> 00:31:19,029
so, this is the key of the open source community

404
00:31:19,029 --> 00:31:25,390
this is the key of the Ruby community, so

405
00:31:25,390 --> 00:31:29,250
I know myself, I'm not a great programmer

406
00:31:29,250 --> 00:31:36,250
so, especially the Ruby commuters in the league
knows I'm not a great programmer

407
00:31:40,080 --> 00:31:42,440
I create so many bugs

408
00:31:46,240 --> 00:31:56,620
but, but still, I could, I did great job that
influenced the world

409
00:31:57,140 --> 00:32:03,770
and I respect myself by changing the world
better

410
00:32:03,770 --> 00:32:09,400
so I believe you can do that too in someways

411
00:32:09,400 --> 00:32:10,809
so change the world

412
00:32:10,809 --> 00:32:11,150
thank you

413
00:32:11,150 --> 00:32:11,809
domo arigato