Absolutely right. I once had an interview where the interviewer asked me for a way of calculating pi, along certain specific lines. When I didn't get it, he 'ex

Absolutely right. I once had an interview where the interviewer asked me for a way of calculating pi, along certain specific lines. When I didn't get it, he 'explained' to me how such an approach could work. I pointed out correctly that his idea was wrong. I was rejected. I'm pretty sure that he never found anyone who came up with this approach just based on the initial vague prompt, and was actually interested in people who nodded in an impressed way when he explained his idea.