PositiveFinancial Times (UK)\"It is a cautionary tale of the fragilities baked into the financial system by layers of complexity and beggar-thy-neighbour profit hunting. It is an engaging history lesson on the evolution of modern trading, the conflicting demands it seeks to serve, and its dislocation from any social purpose. It is an alarming insight into the motivations of prosecutors who are, at times, desperate just to see someone, anyone, pay. And it is a pacy account that swings from humour to horror as it describes a vulnerable man who is out of his depth and failed by the people around him ... Flash Crash captures Sarao’s almost otherworldly oddness without crossing the line into poking fun at him ... Flash Crash is a compelling reminder that such cases could happen again without scrutiny around who gets their hands on markets weaponry.