For the record, I don't have problems when I fly, either. (Well, I take that back. Back in the old days before "mandatory shoe removal" happened, my shoes would set off the WTMD about half of the time, with absolutely no rhyme or reason to it. The same shoes wouldn't set off the WTMD at my home airport but would set it off at just about any destination. Go figure.)

But just because you, and I, haven't had problems doesn't mean that others don't have problems --- or that you and I won't have a problem the next time we fly.

You don't make a process better by focusing on the things that work; you have to focus on the things that don't work.

Because anything you say can be used against you, no matter how innocuous it sounds.

Also, "walking away" isn't always an option. We've been told numerous times that once the "screening process" begins (whatever that means), we're not allowed to stop the process and walk away.