[mmichaels1970]

At the least you stand accused of being gullible, because what was attributed in your earlier post isn’t possible

Bull. It is not gullible to listen and cite conclusions as explained by chairs of physics departments at major universities. Ignorance of physics, sure. But I find it in no way gullible to listen to a physics professor when he talks about physics.

[lepton]

If it were minorly off, sure you can’t be expected to see any possible error, but certainly you can’t believe that 2/3 of the gas could leave and the ball would still be inflated?

I’m sorry if you took that as harsh, but one doesn’t have to have an advanced degree in physics to reason that out at a glance.

Even without understanding that the PSI rating is above and beyond the ambient atmosphere, coming up with a PSI of *negative* three before the sides of the football collapsed, a simple division of 12.5 by 3 would give a pressure of just over 4.

Neither of those answers is near 10.5, the rumor we have been discussing, and thus not plausible.