Any response to his posts one cannot resist, should contain MX's real
name. There's a chance any seeker of tour guide services in Paris
might Google the name up in quotes, and land upon hint of the kind of
personality a prospective payer of money will have to put up with.
This is not nasty; just consumer information w/o hint it's intended to
be. Only real hardball will make him go away. He wants to see his
awesome knowledge on the net so badly for that reason alone, he just
posted elsewhe

"I directly suggested to London some years ago that they might be able
to use
groundwater to cool the subway by circulating a closed-circuit coolant
through
nearby groundwater and then using that to cool the subway. The system
would
gradually run out of cold, but it might last long enough to get
through the
hot period of the year. Then again, the "hot period" is getting
longer every
year, so it would not be a permanent solution."

F--