“Wait a minute, when he blew air at the edges ...”
I guess I have repeat my previous:
When he blew on the rotor evenly as a wind blows on a CoFlo there was NO effect, i.e., no pressure difference.”
“I bet you didn’t watch the whole video did you?”
Did you miss the part where he blew evenly and there was no effect? It was immediately before where he blew on the “edges”.