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Find the Odd Disk

(colors2.alessandroroussel.com)
192 points layer8 | 1 comments | 20 Apr 25 19:17 UTC | HN request time: 0.345s | source
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wrs ◴[21 Apr 25 00:31 UTC] No.43747611[source]▶
Toward the end, I think the confounding effect of the afterimages of the discs was bigger than the difference between the discs. (That is, when looking at the three discs in turn, the effect of the afterimage of disc 1 on judging disc 2, etc.)
replies(2): >>43747768 #>>43747995 #
1. aimor ◴[21 Apr 25 01:17 UTC] No.43747768[source]▶
I noticed this too. I did much better covering up two of the disks and looking at them one at a time, or comparing pairs of disks.