Colour perception test

A lecture last week mentioned this color perception test. It’s quite entertaining. You have to rearrange the blocks into rows of continuous colour, and it sends your brain screwy after a while. With my colour-calibrated monitor I got a score of 4, but I don’t think there’s any point taking the test if you don’t have a calibrated monitor –  you could be arranging them perfectly according to your monitor display, but still be technically wrong.