"Proctologically Violated©®" wrote in
message ...
Sorta what I thought.
Negotiating temperature? Please, gimme a break. More fukn PhDs tryna
justify dey salary.

Proly 68 F was some sort of mean of all the industrial climates, so's
shops could basically make **** in the open air.
And, I think it's a little above the mean, reflecting the fact that back
then, you didn't have A/C, so you could heat up a shop easier than you
could cool it down.

I believe it had more to do with maintainable temperatures in an
already-standardized industrial process. For much longer before the
measurements standards were promulgated - way, WAY before 1931 - the
standard temperature for photographic processing was 20C.

Cellars are reasonably easy places to light-proof, and where many darkrooms
exist even today. They run cooler than the superstructures of their
buildings.

LLoyd