[acconrad]

I don't know if that's true. Some ideas anyone can have a cursory knowledge of your domain, and can identify corner cases you may not have considered. That's mostly the stuff I'm concerned about. I'm curious what kind of corner cases people can ask questions about.

[trafficlight]

Then you tell them you don't know and you walk them through an educated guess. They just want to know that you understand your supposed area of expertise.