• stebo@lemmy.dbzer0.com
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          9 months ago

          This has nothing to do with blind spot. The blind spot is only a thing if you close one eye. Furthermore you only have one blind spot so it would only hide one dot and it would only work at a certain distance from your eye to the screen.

          The real reason here is just that the dots blend in with the grey lines when you don’t focus on them.

    • Psythik@lemmy.world
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      9 months ago

      Your eyes are very low resolution outside of the center of your vision, so your brain makes up a lot of missing info to prevent you from noticing. Try reading this comment without moving your eyes, for example. Keep them straight ahead. It is impossible.

      • astraeus@programming.dev
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        9 months ago

        Yeah this, most of the sides of the retinas are meant for color distinction and not granular details, the only detailed part of our eyes is very close to center

    • stebo@lemmy.dbzer0.com
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      9 months ago

      I think you actually can see them all at once but they just blend in with the grey lines. If the dots were orange, you’d see all of them at once.

    • remotelove@lemmy.ca
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      9 months ago

      12. The only way I found to mostly break the illusion is to zoom in and you can see 3 at a time. If you rotate your phone, you may be able to see two at once.

      It’s a sneaky one and I don’t remember it working this well on me.