he instructor however had supposedly bugged the calculators so that on
certain problems they gave impossible answers, off by orders of
magnitude; and in the grading gave lots of bonus points to those
students who noticed and said something about it.

Probably an urban legend

I hope not!

Jose
--
"Never trust anything that can think for itself, if you can't see where
it keeps its brain."
(chapter 10 of book 3 - Harry Potter).
for Email, make the obvious change in the address.