Well there's liars on both ends. On the one end you've got the fancy vocab know-it-all smooth talker. On the other end we've got the I can learn quantum financ

Well there's liars on both ends. On the one end you've got the fancy vocab know-it-all smooth talker. On the other end we've got the I can learn quantum finance on-the-fly guy (perhaps quantum finance is not too hard, but you get the point). Honestly though - I don't think anybody will give you a very useful tip as most honest people will probably admit that their "gut" is still a very important factor. But I do understand you're simply looking for inspiration so not that it's pointless to ask. Personally I think that most poor and average-level liars tend to play it safe. They talk a lot, but most of what they say is stuff that's very agreeable, they don't have the balls to make up their own complex-sounding insight. Of course a top class liar will pass that. And sometimes, you know, a liar is so top-class that he might even actually be able to do the job :-) It's a game. And by setting it rules you're simply determining who's capable of beating it. Someone will always be able to. I'd rather focus on making it easy to fire them.