> wing can't support the weight of a human but it's supports the weight of like 200 humans +luggage every time it flies? unless your implying the fucking fuselage does the lifting. the reason all wings on all aircraft say "no step" is because there's a good chance youve got dirt/sand/grit on your boot that can fuck up the finish on the wing or even the metal underneath the finish. stress fatigue, thermal expansion, these can make a tiny scratch turn in to a pretty big issue, so the easiest way to prevent cracking and even complete failure of the wing's surface is to just keep people and their shoes/boots off the damn wing. i actually took a class on this shit and am liquid penetrant 2 certified. while typically now wing inspection is done with something like eddy current, the fact of the matter is if anything, the wings are probably one of the strongest parts of the aircraft.  in order to absolve myself of the inevitable accusations of me being a jew, remember that building 7 collapsed in on itself despite not being touched by any aircraft, and the pentagon was hit prior to it being in court to talk about the billions of dollars they'd lost.
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