This is the best explanation I've seen.
Summary - it's complicated

www.avweb.com/features_old/lift-doesnt-suck/

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azymuth said..
This is the best explanation I've seen.
Summary - it's complicated

That was very good, especially from a philosophical point of view (yep, single factors do not explain multi-factorial realities) ... but still ... it does not explain why I am not flying my foil consistently

YOU can be close to perfect.
However, the wind varies by 10 mph and 20 degrees in direction....without telling you