Professor? So this was at a university? What point was he trying to prove? And did those who failed the test go on to somehow magically develop the critical thinking skills that they were lacking?
Sounds like a cheap stunt if it wasn't immediately followed by both remedial teaching and a shake up of the teaching at the institutions that had so signally failed those students.
It could have been a story or something that I read in an article, but the point remains. We shouldn't blindly trust results/calculations if we don't have a feeling of the correctness or how the result is derived. I understand that this isn't valid for many cases where difficult and complex computations are performed, but for many real life scenarios and situations it's valid. As stated in the original article, the people holding the AI strings are somewhat disconnected from us real people and they lack this human and real life touch. I hope I've explained it correctly :-)