there's an even better technique called Chisenbop. It allows you to defer basic calculations to a mechanical process. It's described in "mind performance hacks"

there's an even better technique called Chisenbop. It allows you to defer basic calculations to a mechanical process. It's described in "mind performance hacks" from o'reilly. http://www.ludism.org/mentat/MindPerformanceHacks_2fTurnYourHandsIntoAnAbacus http://www.ludism.org/mentat/MindPerformanceHacks_2fTurnYour...