Karl Schmidt from Probat gave an interesting lecture in thermodynamics that involved a little too much text book physics. Some people seemed a little overwhelmed. It's a sound approach, but is better for print, an article, or a wiki, that a full on lecture. BTW there are more like 1400 to 1900 coffees beans in an Lb of green. Karl was too German for gangs, although he careless threw out gang signs, such as the RR17 gesture above. In Sugar Lake it was no problem, but try doing that in Mille Lacs and you might not walk away from it.