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Find the Odd Disk

(colors2.alessandroroussel.com)
192 points layer8 | 2 comments | 20 Apr 25 19:17 UTC | HN request time: 0.001s | source
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nuancebydefault ◴[20 Apr 25 19:56 UTC] No.43746131[source]▶
What stood out a lot in this exercise is that when looking at, versus near a disc, its luminance (or maybe the color as well) is perceived as changing. Almost the same i have when staring at not too bright stars, they seem to disappear when staring directly on them.

And related, I once had an 'eye migrane'. During that half an hour, the figures of a clock disappeared the moment i looked at them.

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1. RetroTechie ◴[20 Apr 25 21:00 UTC] No.43746492[source]▶
Similar experience. What surprised me: sometimes the odd-one-out was really quick/easy to see, and other times it took much longer & I thought "at the end, they'll say all disks were the same color".

Got 14/20

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2. mrguyorama ◴[21 Apr 25 18:28 UTC] No.43754946[source]▶
For some of the easier ones, I was surprised by how aggressively my brain was making what seemed like "close" colors stand out. Like it was mentally "highlighting" the odd one out. I thought that was cool, but eventually the later ones were hard enough that the effect went away, and I was much less confident in my choices, and I got 3 mistakes, all in the last five rounds.

The way your brain manipulates your vision 24/7, with no way to get around that, is truly crazy to me. There's all sorts of effects in your visual system like edge detection and certain types of stimulus suppression that it's crazy we even feel like reality is coherent.