All this means that in the 200,000 years since Homo Sapiens took her first steps across the African plains, just 57 billion people have ever lived. Astonishingly that means over 12% of all the people ever born are walking the planet at this very moment. Or to put it another way: one in eight people who have ever been born are alive today.

On one hand you want to keep the file dimensions as small as possible to take best advantage of the tiling effect. However, when you notice a distinctive feature — for instance, a knot in some woodgrain — repeating at regular intervals, it really breaks the illusion of organic randomness.

Maybe we borrow some ideas from cicadas to break that pattern?