![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
Same shade of grey? :)
These two blocks are the same shade of gray. Don’t believe me? Use your finger to cover the line and the shading in the middle and see for yourself!
Phil Plait gives an explanation of how are brains can be fooled by optical illusions here: http://slate.me/IG3zab
Phil Plait gives an explanation of how are brains can be fooled by optical illusions here: http://slate.me/IG3zab
no subject
no subject