Very true. I, for one, am very greatful for the work folks like you, Ken, Tom, et. al. do in this field. Especially the late Howard Madeus and Devereaux Cannon. It is subject that fascinates me, but, unfortunately, I can only devote a fraction of the time to it I would like. The real world (i.e. j-o-b) has a nasty habit of intruding on my fun time.