Exactly, so the way that interview should have gone is something like: Candidate: I'm not sure, I think I remember something about A* or something. Me: Cool,

Exactly, so the way that interview should have gone is something like: Candidate: I'm not sure, I think I remember something about A* or something. Me: Cool, that sounds familiar to me as well. How about we go google it up and then have a look at implementing it. Here's some source data that comes from our supplier, let's pair on getting something working... And an hour later, we would have built something trivial but useful, and I'd be happy.