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# Optical illusion Saturday – Publications – AEI

Summary:
AEI Optical illusion Saturday It’s been a while since I featured any optical illusions on CD, so thought I’d post a few today. The first one above is pretty amazing — although it’s impossible to make your mind believe it, the squares marked ‘A’ and ‘B’ in the graphic above are actually the exact same shade of grey. If you don’t believe it, see the graphic below, where I copied and pasted the B square next to the A square.   Below is a variation of the optical illusion above that’s a little easier to prove that the two shades of grey are amazingly exactly the same color. And here’s another illusion below showing two peacocks that are actually exactly the same color, but appear to be completely different colors. To prove it, see the bottom graphic below with the background removed! From

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It’s been a while since I featured any optical illusions on CD, so thought I’d post a few today. The first one above is pretty amazing — although it’s impossible to make your mind believe it, the squares marked ‘A’ and ‘B’ in the graphic above are actually the exact same shade of grey. If you don’t believe it, see the graphic below, where I copied and pasted the B square next to the A square.

Below is a variation of the optical illusion above that’s a little easier to prove that the two shades of grey are amazingly exactly the same color.

And here’s another illusion below showing two peacocks that are actually exactly the same color, but appear to be completely different colors. To prove it, see the bottom graphic below with the background removed!

From some more amazing illusions, here’s a link to “Ten of the greatest optical illusions” including the top one above.

Mark J. Perry is concurrently a scholar at AEI and a professor of economics and finance at the University of Michigan’s Flint campus. He is best known as the creator and editor of the popular economics blog Carpe Diem. At AEI, Perry writes about economic and financial issues for American.com and the AEIdeas blog.