interviewing

When interviewing for a technical position, the one question I ask is "how did the email inviting you here today make it from me to you?"

This question allows scales incredibly for an entry level tech to a high level administrator.

I'll typically even include the question itself in the email that we'll be talking about. This gives them the ability to research, but also makes it abundantly clear to me where the edge of the knowledge is if I probe too much.

The ultimate goal is to get them to say i don't know.