I do the same thing. It's how the thought process works that's interesting, not the result. There is no problem or teaser whose answer is both short enough to b

I do the same thing. It's how the thought process works that's interesting, not the result. There is no problem or teaser whose answer is both short enough to be devised during an interview AND is representative of how a candidate would perform in real projects. Our field deals with complex systems in many dimensions. Instead, looking for how a candidate approaches a problem, do they just go for the obvious solutions, how creative will they go, any experience they can draw on, how well they overcome unknowns, etc.