But our favourite trick is the one above, in which Dave demonstrates how to draw a perfect (and we mean perfect) circle, completely freehand. All you need is a pen, a piece of paper, a friction ...

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THERE’S no getting around it - drawing a perfect freehand circle without even looking is a seriously impressive skill. And it’s been captured in this astonishing how-to video. Man begins to ...

A hard-to-put-down online game asks you to perform just one task: draw the perfect circle on your phone or tablet. Can you do it?