Вот что запомнилось:

'He gave a talk in which he argued that the way they measured risk was completly idiotic. They measured risk by volatility: how much a stock or bond happened to have jumped around in the past few years. Real risk was not volatility; real risk was stupid investment decisions.'

если коротко...
Риск это не волатильность, риск это тупые инвестиционные решения.