to repeat. you are trying to make a mountain out of a sand dune..
to prove water was the prime block moving force..
because ramps weren't.
My original take was that you based the latter on not buying Houdin's detailed proposition.
The strange part is that I got about 50 pages into it before I had seen enough to know he wasn't basing his theory on what anybody knows but on how he would do it.
In summary....to what end re you willing to take this special pleading in an attempt to prove a negative???