Drew M brought my attention to this great animated gif.  Stare at the dot and see what happens……



    1. What matters is what you see when it switches from colour to a black and white image. It’s a sort of after-image type effect.

  1. yeah that is cool – that is really cool. I honestly thought is was really lame at first as it changed colour before I had stared at the dot for very long and I though that was the “trick” – then I realised it is not when it changes to colour – but when it changes BACK to black and white that matters!

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