In 2002, two men savagely attacked Jason Padgett outside a karaoke bar, leaving him with a severe concussion and post-traumatic stress disorder. But the incident also turned Padgett into a mathematical genius who sees the world through the lens of Geometry. He developed the ability to visualize complex Mathematical objects and Physics concepts intuitively. The injury, while devastating, seems to have unlocked part of his brain that makes everything in his world appear to have a Mathematical structure.
This condition is called Synesthesia. He is currently being studied along with several other savants to try to discover how this condition works. This is how he saw his hand when asked to draw it.
Look at your hand and see how the cells form fractal patterns much like what he draws. The elegant beauty of the Universe that allows a Mind to see all Math as shapes.