No Trick

My officemate at work provided me with this image. I find it a really amazing demonstration of how human perception can be fooled. And if you don't believe me, print the picture on a high-quality color printer and convince yourself.
K-

My officemate at work provided me with this image. I find it a really amazing demonstration of how human perception can be fooled. And if you don't believe me, print the picture on a high-quality color printer and convince yourself.
K-
Whoa there, nelly! Are the squares the same color, or are the letters on the squares the same color?
Oh yes, your comment on my entry yesterday (actually both comments) was priceless. And I was about to PIMP when Wanda added her second one!
The squares are the same color.
K-
NOW I wish I had a color printer. That's some illusion.
It really is cool. I've seen it with my own eyes by printing the image with a good color printer, cutting the picture bisecting the squares marked A and B, and then putting half of the A next to half of the B. They really are the same shade of gray.
K-
Unreal. I've seen it, but I still don't believe it. Or maybe I just don't want to believe it. I don't have a color printer. I loaded the picture into a photo editor and then cropped out the two squares and then put them side by side. Like what Kem did, but not with paper.