Kobayashi Maru

I once did something like KM on my best programmer I ever trained. After a week, I told him inheritance could be done in Visual Foxpro but not in Visual Basic (not .net). My purpose was for him to sense what was impossible, but to always keep on trying to find a solution. I couldn't apply it to the rest of the team since it was a cube office so everyone heard the answer.

If this was done in an interview, it may or may not be nice. For one, not being an employee, the person would say it is unfair to give an impossible question on a desperate person.

Perhaps something light and a bit funny on a VM?