Very cool thread 
Yeah some people seem to get offended when other people are confident in their knowledge 
I dunno why but it really gets people to throw tantrums! Don’t know why they have to be so sensitive, but I digress.
Anyways @BreederSteve , you might find this info on hollow stems and the potential greenhouse effect they cause to be interesting/relevant to this thread 
the tl;dr is hollow stems seem to increase internal plant temperature. Perhaps this is the source of the idea that hollow stem plants are better or more potent?