![New](/static/images/lrpd.gif)
Then please..
Never! let this person *ride* in VW-bugs, Pintos, the more-stupid 'high' UAVs ... or anything with fewer than 8 air-bags. OK?
(I usually fudge the er upper tables: round-up, EZ-multiply then add-back an even easier multiply)
Also recall an anecdote re a couple physics Luminaries, though I can't be sure which! - might have been Fermi? and Bethe.. maybe Feynman was in this little event (but if Von Neumann, would merely be 'expected')
Arguing a Problem (maybe Los Alamos related) they were 'running differential equations' in brain. An onlooker imagined you could see folks moving partial results into 'internal registers' (!). Someone also had a calculator (which would have been an old Marchant mechanical one with electric motor) - which finished last.
{sheesh} imagine the Utility of having Flash-RAM in one's brain/mind! (would that be firmware, wetware or Warez?)
I sorta liken this to 'circular breathing' - which has been learned by a variety of wind-instrument players.. just in past 30? years: ie can play Perpetuum Mobile on a flute, trumpet etc. It is *awe*some, that overused, now dead word - to those of us who hear the Impossible being done.
Maybe your son can grok How the above folks managed their literally 'routine' feats too (?)
... must be scary to be raising a potential National Treasure.
Cheers,
Ashton