Do You Prepare Questions for Interviews?

I want to ask you some nutsand bolts questions about how you do interviews. And you can tell me if they're different in the different kinds of interviews that you do. I'm when you're doing interviews, do you prepare questions in advance? I don't. Probably the only time i've ever done it is interviewing a well known person with a set amount of time. No, i senario, where i feel like i would like so scared if i didn't have written down exact number of the national dey,. It's so dependent on who and what the situation is.