'Looking' is what scientists call the theory of sight.

It's a nickname. Like 'Ed' is short for 'Eddie'.

Looking can be very useful in modern life - how else would you be able to tell the difference between a brick wall and a ham sandwich?

Linked to looking is blinking. It's the medical term for closing your eyes and then opening them again.
Closing your eyes and not opening them again is known as death.

What can cause you to blink?
Well, if someone pokes you in the eye - that's a blink.
If a bird pecks you in the eye - that's a blink too.
And if you are shocked or surprised - you know what? That's also a blink!

The longest time a human has spent living without a blink is an eye-popping 34 years.

The record is held by Keith Linton, who was born without eyelids!

He literally can't blink, no matter how many pokes, bird-pecks, or shocks he encounters!