To us it looks like an object with a dark grey top and a white bottom, and our brains insist on seeing the bottom as lighter than the top.
It is a dark grey top with a white bottom. White appears grey when less light hits it. That’s what shadows are.
To see things as they actually are isn’t always a blessing.
Seeing things as they are is not a blessing or a curse, but a learned skill that has allowed me to enjoy a 20 year career as a working artist. The checkerboard example above is a more convincing example of simultaneous contrast, but neither are super mind-blowing IMO. Slow news day at Boing Boing.
