Most of the stuff about currency trading comes from a fascinating conversation between Stewart Brand, Peter Schwartz and James Oglivy, featured in Stewart Brand's "The Media Lab: inventing the future at MIT", Penguin Books, 1988, ISBN 0 1400.9701 5, pages 230-235.

Although written some time ago I still think this book is the best introduction to the issues raised by the digital revolution I have come across so far. =20