Of lumens and foot-candles

I just attended an energy efficient lighting seminar that totally sent me to snoresville. I'm sure that lighting designers and other engineer types would have benefitted from the discussion of lumens, color rendering index levels, wattage and the sort, but I was totally lost in all the technical mumbo-jumbo.

I did appreciate the part of the session where the fellow turned up and turned down the energy levels to show how you could create "warmer" and "cooler" lighting schemes. Otherwise, nothing else was helpful for my job. And on top of it, the free lunch was pretty blah.