[BITList] Fwd: Re: Human calculator. [VIDEO]

[franka]

Hugh,
Think he most likely was using the *The Trachtenberg System* I remember 
teaching my eldest daughter some of the algorithms for multiplication 
and addition when she was about eight, and in a very short period of 
time she was multiplying six figures by six figures in her head 
unfortunately I didn't progress with the system as I thought that it 
might throw her out of wrack at school, years later I noticed that the 
power coaching colleges were using his system during the summer semester 
catchup secessions
frank



John,
It's baffling. It's highly impressive.  But it isn't mathematics as I 
know it. I can square 2-digit numbers in my head - on a good day, 
3-digit - once in a blue moon, 4-digit - it all depends on whether my 
memory cooperates.  Once the simple trick is learned, the rest is 
memory.  That isn't mathematics either.
Hugh.
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