“The one thing that’s missing, but that will soon be developed, is a reliable e-cash, a method whereby on the Internet you can transfer funds from A to B without A knowing B or B knowing A. The way I can take a US$20 bill, hand it over to you and then there’s no record of where it came from. You may get that without knowing who I am. That kind of thing will develop on the Internet.”

Milton Friedman
Economist and Nobel Prize Recipient in Economics, 1999