thanks (i suppose) for a lesson in MATHS logic.

i recognize this lesson is a 'word lesson' but i still don't understand what is really has to do with words.

in the real world, it would be helpful if some always told lies, and some always told the truth. then with logic, we could navigate the world.

unfortunately, most liars occational tell the truth, and most truthful people occationally tell a lie.

and while Your thoughts is a bit more inviting, DISCUSS sound like a command.

i have very little interest in discussing the logic problem--especially when commanded to!