But why?

You can go into a high end ladies fashion shop and buy designer pants for an insane amount of money.
Most of these pants have "fake" pockets. Meaning flaps or pouches that look like they are pockets but aren't.
According to the sales associate, real pockets that you could actually use to put stuff in spoil the line of the pant. Real pockets make pants look less "sleek".
You can go into a fashionable baby clothing store and buy pants for a baby age 0-3 months.
The pockets in those pants are real pockets.
For the new born babies to put all their stuff in.
(Because they don't worry about how sleek they look.)

Optical Illusions- Are we having a flash back?

Look closely.
This is not an animation.
Your brain is doing the moving.
"It's moving but is not moving man!"
Trippy.

Optical illusions- Who is this guy and why does he have such staing power?

Make this image big, (ie. click on it). Focus on the the four little black dots in the center for 30-40 seconds. Look at a flat colour wall for a few seconds. Blink your eyes a couple of time.
I have no idea how or why this works. This guy must be magical!

Optical illusions- These lines are straight.

It looks like they are slanting up and down, but they really aren't. The placement of the squares makes them appear so.

Optical illusions- making circles move.

Focus on the dot in the middle, then move you head towards the screen and away from the screen and the circles will move.
Eerie.

Optical Illusion- Too many legs?

Elephants don't really have five legs. At least none of the elephants I know.

Optical illusion Black dots?

It's really strange what you brain does all by itself. For example, there are no black dots. If you try to focus on them you will see they are not really there.