Got your book today(and I really like it by the way ) and I'm just halfway thru it but I have a question:

Could a mill driven by a horse going in a circle be considered an open system cause the wind can add to the input thru the "wings" on the roof?

This could be an absolutely moronic question for ppl who know stuff about this but I have no clue so I thought I'd fire away with some questions when I was gonna give praise to the book anyway.

Also(and I will re-read that chapter) are we all built from Aether or is that separate from our physical body?

Cheers



Danny