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Hes right but my ancient brain seemed to recall that a foot pound and pounds per sq foot are similar, just expressed in different ways.
Wont be the first time Ive been proved wrong, I still remember...

Actually its a lot more.
Say for example you weigh 100 kg (224 lbs) thats 112 lbs per foot. Say you are shoe size 10 thats roughly 57 sq inches, say the heel is 25% of the total area thats 14 sq...