Conventional statistical analyses presuppose that intrinsic variability is white noise. White noise yields a jagged and irregular line with a fractal dimension of 1.5, because successive observations are statistically independent of each other.

Traders also need to understand these cognitive biases to avoid herdthink.

I said, ‘Well, you can say what you like about Joe, I've never known him to give anything away — even when he should have done because I was working with him! Secret squirrel syndrome we used to call it in the army.’

Fire burst from its open mouth, its eyes glowed with a smouldering glare, its muzzle and hackles and dewlap were outlined in flickering flame.