Return to Video

The Fermi Paradox II — Solutions and Ideas – Where Are All The Aliens?

  • 0:00 - 0:05
    There are probably 10,000 stars for every grain of sand on Earth in the observable universe.
  • 0:06 - 0:08
    We know that there are maybe trillions of planets.
  • 0:08 - 0:10
    So where are all the aliens?
  • 0:10 - 0:12
    This is the Fermi Paradox
  • 0:12 - 0:15
    If you want to know more about it, watch part one.
  • 0:15 - 0:19
    Here we look to the possible solutions to the Fermi Paradox.
  • 0:19 - 0:23
    So will we be destroyed or does a glorious future await us?
  • 0:30 - 0:36
    Space travel is hard, over possible it's an enormous challenge to travel to other stars.
  • 0:36 - 0:40
    Massive amounts of materials have to be pushed into orbits and assembled.
  • 0:40 - 0:46
    A journey of maybe thousands of years is need to be survived by population big enough to stop from a scratch.
  • 0:46 - 0:50
    And the planet might be not as hospitable as it seems from afar.
  • 0:50 - 0:54
    It was already extremely hard to set up a spaceship that could survive the trip.
  • 0:55 - 0:59
    And interstellar invasion might be impossible to pull off.
  • 0:59 - 1:03
    Also consider time, the universe is very old.
  • 1:03 - 1:07
    On Earth there's been life for at least 3.6 billion years.
  • 1:07 - 1:11
    Intelligent human life for about 250.000 years.
  • 1:11 - 1:16
    But only for about a century have we had the technology to communicate over great distances.
  • 1:16 - 1:24
    There might have been grand alien empires that stretched across thousands of systems and existed for millions of years
  • 1:24 - 1:25
    and we might just have missed them.
  • 1:25 - 1:29
    There might be grandiose ruins washing away on distant worlds.
  • 1:29 - 1:34
    99% of all species on Earth have died out.
  • 1:34 - 1:37
    It's easy to argue that this will be our fate sooner or later.
  • 1:37 - 1:44
    Intelligent life may develop, spread over a few systems and die off over and over again.
  • 1:44 - 1:48
    But galactic civilizations might never meet.
  • 1:48 - 1:52
    So may be it's a unifying experience for life in the universe to look at the stars and wonder "Where is everyone?"
  • Not Synced
    But there is no reason to assume that aliens are like us
  • Not Synced
    or that our logic applies to them
  • Not Synced
    It might just be that our means of communications are extremely primitive and outdated.
  • Not Synced
    Imagine sitting in a house with a mass co-transmitter, you keep sending messages but no people answer
  • Not Synced
    and you feel pretty lonely, may be we're still undetectable for intelligent species
  • Not Synced
    and we'll remain so until we learn to communicate properly.
  • Not Synced
    And even if we met aliens we might be to different to be able to communicate with them in a meaningful way.
  • Not Synced
    Imagine the smartest squirrel you can,
  • Not Synced
    no matter how hard you try, you won't be able to explain our society to it
  • Not Synced
    After all from the squirrel's perspective a tree is all that sophisticated intelligence like itself needs to survive.
  • Not Synced
    So she learns cutting down whole forest is madness but we don't destroy forest because we hate squirrel.
  • Not Synced
    We just want resources
  • Not Synced
    The squirrel's wishes and the squirrel's survival are no concern to us.
  • Not Synced
    A time three civilization in need of resources might threat us in a similar way.
  • Not Synced
    They might just evaporate our oceans to make collecting whatever they need easier.
  • Not Synced
    One of the aliens might think for second "Ughh tiny little aches, they built really cute concrete structures, oh well now they're dead."
  • Not Synced
    before activating wasp speed.
  • Not Synced
    But if there is a civilization out there that wants to eliminate other species,
  • Not Synced
    it far more likely that it will be motivated by culture rather than by economics.
  • Not Synced
    And anyway it will be more effective to automate the process by constructing the perfect weapon,
  • Not Synced
    a self replicating space probe made from nano-machine.
  • Not Synced
    They operate on molecular level incredibly fast and deadly,
  • Not Synced
    with the power to attack and dismantle anything in an instant.
  • Not Synced
    You only need to give them four instructions.
  • Not Synced
    One, fine a planet with life.
  • Not Synced
    Two, disassemble on this planet into its component parts.
  • Not Synced
    Three, use the resources to build new space probes.
  • Not Synced
    Four, repeat.
  • Not Synced
    A doomsday machine like this could render a galaxy sterile in a few million years,
  • Not Synced
    but why would you flight light years to get the resources or commit genocide.
  • Not Synced
    The speed of light is actually not very fast,
  • Not Synced
    if someone could travel at the speed of light, it will still take 10000 years to cross the milky way once
  • Not Synced
    and you'll probably travel way slower.
  • Not Synced
    There might be way more enjoyable things than destroying civilizations and building empires.
  • Not Synced
    An interesting concept is the Matrioshka Brain.
  • Not Synced
    A mega-structure surrounding a star,
  • Not Synced
    a computer of such computing power that an entire species could upload their consciousness and exist in a stimulated universe.
  • Not Synced
    Potentially, one could experience an eternity of pure ecstasies without ever being born or sad, a perfect life.
  • Not Synced
    If built around the red dwarfs, this computer could be powered for about ten trillions years.
  • Not Synced
    Who would want to conquer the galaxy or make contact with other life forms if this were an option.
  • Not Synced
    All these solutions to the Fermi Paradox have one problem.
  • Not Synced
    We don't know where the borders of the technology are.
  • Not Synced
    We could be close to the limit or nowhere near it.
  • Not Synced
    And super technology awaits us,
  • Not Synced
    granting us immortality, transporting us to other galaxies, elevating us to the level of gods.
  • Not Synced
    One thing we do have to acknowledge is that we really don't know anything.
  • Not Synced
    Humans have spent more than ninety percent of their existence as hunters-gatherers.
  • Not Synced
    500 years ago we thought we were the center of the universe.
  • Not Synced
    200 years ago we stopped using human labors as the main source of the energy.
  • Not Synced
    30 years ago we had apocalyptic weapons pointed at each other because of political disagreement.
  • Not Synced
    In the galactic time scale we are embryos,
  • Not Synced
    we've come far but still have a long way to go.
  • Not Synced
    The mindset that we really are the center of the universe is still strong in humans,
  • Not Synced
    so it's easy to make arrogant assumptions about life in the universe.
  • Not Synced
    But in the end, there's only one way to find out right?
Title:
The Fermi Paradox II — Solutions and Ideas – Where Are All The Aliens?
Description:

more » « less
Video Language:
English
Duration:
06:17

English subtitles

Revisions Compare revisions