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My first drawing on phone... XD xD

Cover your left eye & look at the left cross. Move towards the screen, the dot diasppears & vice ...

Stare at the yellow dot for 20 secs and some of blue dots will disappear

The lines are straight 😏😏😏

"There are all kinds of interesting questions that come from a knowledge of science, which only adds to the excitement and mystery and awe of a flower."
Richard Feynman
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