If the footballs were notably lower pressure, then the only way it could have happened was if someone went in and stuck a needle in the ball and let two-thirds of the gas out,
If they let 2/3 of the gas out, that much gas wouldn’t leave and the ball would be trying to implode.
“Being that it has been filtered through journalists, I’ll give him the benefit of the doubt though.”
I looked at the comments. One noted that he had looked at the prof’s original calc and he had mistakenly used PSIG instead of PSIA.
I am sure he is taking a big ribbing from his fellow professors and students.