Sacred Haven of Debauchery

Regarding the airplane: it depends on the viscosity of the air. If the fabric drags it along well enough, the airplane will take off.

Well, the fabric is a plane, and the vector of air movement in this plane is collinear with the vector of air movement around the airplane (conditionally). Roughly speaking, they don't touch (or touch very little). In any case, the difference in the forces of the air flows will be negligible, so it won't give the airplane enough acceleration to take off.

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Well, I had that thought... )))

Don't try to back out now.

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Rimp, should I post what I have? Or did you already figure it out and this is where the provocative argument about beer came from? )

Also, where I wrote about 42, I came to the conclusion that there is no solution