bucketman,

Here's a hypothetical reasoning problem:
(nothing to do with code)

If you have a Light in the Attic and 3 switches in the Basement (1 turns on that light) - How can you fgure out, by yourself, which switch it is and only make the trip up to the Attic 1 time?

Everything works, the Attic is not within sight and no one else is there.

If anyone else has heard the answer to this before please do not let it out right away.

[Linked Image]
Bill

Bill