Dirk Van de moortel wrote:
Actually, knowing Schoenfeld, he's just trying to find a
way to avoid ackowledging the fact that he was selling
**** from the beginning, and that, in order to boost his
sales, he made a silly glaringly elementary mistake.
It's a Schoenfeld Trademark. I love it :-)

Speaking of elementary mistakes, I hope now you have taught yourself
why:

[Dirk Van de moortel wrote:]
"By the way, zero is usually taken to be both positive and
negative. "

is a "silly glaringly elementary mistake" by your own efficient
demonstration.

To be precise, the exact error in my reasoning was to confuse:
"There exists y such that for all x, x + y = x" as
"For all x there exists y such that x + y = x".

So I guess the OP was right. Congratulations! (on your award, that is).


Dirk Vdm