<p>'Orrell argues that modelling markets with the mathematical toolbox of quantum mechanics could lead to a better understanding of them ... Such ideas may still sound abstract. But they will soon be physically embodied on trading floors ... One way or another, finance will catch up.'</p>

The Economist

David is our go-to source for anything and everything about quantum finance and economics. He's at the forefront of the subject and, what's more, he can explain it well.

Paul Wilmott, Editor-in-Chief, WILMOTT Magazine

[An] impressive, intelligent and imaginative bomb of a book ... [it] entertains, educates and delights ... A highly recommended read for all connoisseurs of curiosity and hope. And an absolute must-read for would-be economists.

Chris A. Weitz of gaiageld.com