very interesting!

what is a good source of  information regarding this kinds of illusion? is it ?

i need to understand why the human brains works that way?
as in why did i find the AC a straight line i mean :)

it is because of my prior knowledge in life (looking at physics phenomena of refractive index of glass)?

by the way, there is an optical illusion that i could not believe.
very interesting too
Areas of the image A and B are the same color.

A rectangle of the same color has been drawn connecting the two areas of the image