For your serious contemplation:

René Descartes walked into a McDonald's and ordered a Big Mac.

The kid in the paper hat asked, "D'ya want fries with that?"

Descartes answered, "I think not."

And disappeared!

By the way, BillD, I'm sure you were aware that the term "expert" comes from two Latin words: ex, meaning "has-been" and "spurt," which is a little drip under pressure. . . .

Don Firth