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Cake day: June 6th, 2025

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  • They do work. It takes some practice to get them though. At first I used a pencil or something to focus on while I made the two dots merge together, stayed focussed on the pencil until my brain “saw” the image behind it, then it sort of locked in and I could take the pencil away. I’ve done so many of them now that I can just go crosseyed to bring the dots together, then look at the middle picture.

    The 3D image works by tricking your brain into seeing a third image that isn’t really there. We’re used to constructing 3D images from two slightly different views; we do it all the time, so the two images are slightly different and when overlaid use the same mechanism to make you think it’s 3D.