This is harder than it sounds. We can control the number of dots that move in one direction, and the rest move at random. When many dots move in one direction, the decision is easy:
How Your Brain Decides What You’re Seeing
Mark Humphries
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this is really difficult to do. the moving dots . controlling dots in one direction . other dots in random . many dots in one direction .

this dots , we use to plot in graph sheet after an experiment , especially in physics , we use to join the dots , most number of dots and draw the graph , conclude from the shape.

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