> Did Khaneman get into this in his book?

Not from what I recall; this was just my own observation. (Also, in retrospect I should have made it clearer that this exception was meant to be an example more than a particular claim... "under sufficient duress" almost makes it vacuously true.)

> Also, as for the point of contention, [...]

Yes! I've heard this reported as well, multiple times. I suppose it's sort of like using a pen and some scratch paper.