I would suggest he do a survey of physicists, to see how many of them still claim quantum mechanics only apply on subatomic scales, despite the fact all the evidence has indicated otherwise, since the Schrodinger Equation was formulated.
Of course, I could suggest other questions to ask, for thought experiments, and you can always claim its related to the Quantum Observer Effect. Richard Feynman said "We are attempting to prove ourselves wrong as quickly as possible, for only in this manner can any hope to make faster progress".
