After reading the Carnegie Mellon study, it's pretty clear that they did no such thing as replicate the game conditions. They wet rye balls and just let them sit therein a shelf in 50 degrees.
During the game, the balls were constantly dried off by both the refs and equipment managers. Only one ball at a time was exposed to the elements and it was constantly wiped down by the refs. The other 11 balls were kept nice and dry and warmer while that ball was on play. Further, the ball in play at any time was also constantly being handled by people gripping it, rubbing it, etc, so they would all have an effect on the external and internal temperature of the ball.
The way the balls were handled and treated during the game is so completely different than sitting wet on a shelf that their experiment is totally useless.
saying that they were playing with warm dry footballs during the game doesn't bolster the argument that the patriots gained an in-game advantage. quite the opposite actually
Huh? I didn't say the footballs magically repelled the water. Certainly the exteriors became wet and slippery when put into play. But having a layer of water on the outside of the football that is constantly wiped off is entirely different than being soaked in water and left to sit.
The HeadSmart video explains that 2 factors can decrease football PSI.
1) Colder temperature: This is generally accepted as true by most rational scientists. If you have scientific proof that colder temperature does *not* decrease football PSI, please let everyone know at once. Your "discovery" could win you the Nobel Prize because it would overturn the Ideal Gas Law.
2) Water: Leather will absorb some of the water and expand, which increases the volume of the football, but decrease the football PSI. HeadSmart soaked the ball 1x and let it sit there -- but water beads, so some parts of the football lose contact with water very quickly. Someone could argue that game conditions are even worse because the football is soaked repeatedly. Sure it is wiped off, but that means it is dry for a few seconds before it is wet again by the rain. The only way to prove or disprove which is worse, is with an experiment.
In any event, saying their experiment is "totally useless" is inaccurate. It absolutely proves again that cold temperature decreases PSI. Reasonable people can argue over how much PSI is lost from wet leather. But none of that proves that the Patriots deflated any balls.
If you really dispute the HeadSmart video, why don't you post a video of your own experiment and let us know the results?