Let's explain a bit
the animation techniques.

So, for starters,

remember that animation is an illusion,

so everything you see is not real.

Even I am not really moving now.

You're just seeing a semplification...

...of the movement I made right now,

because the video camera takes
thirty frames per second,

which simplify my movement...

...and create the illusion,
but you don't really see the movement.

This illusion works incredibly well.

How does animation work?

Animation consists in:

instead of taking someone
who is really moving,

and using a movie camera
to record their movement...

...and creating a simulation,

we do the opposite.

There is no movie camera in animation.

There is none.

You don't need
the techonolgy of the machine...

...recording you
with thirty frames per second,

because each picture can be taken...

...potentially even years later.

Animation is that illusion
in which I, human being,

take pictures whenever I want,

to create the illusion that something
that can't actually move, is moving.

The most famous and used
technique ever is the traditional.

The traditional technique
consists in a drawing,

which gets redone from scratch,

and redone again,

and redone again.

Each drawing you make has
some slight changes,

so when you see
these drawings in sequence...

...it creates
the illusion of movement.

Pretty simple concept, right?
This is traditional animation.

Then it takes many names
based on the support used to draw.

If you use a cel,
that is an acetate sheet,

with a paper sheet, strapped together,

it's hard to explain,
but that is an animation cel.