PO TAY TO, PO TAH TO

PO TAY TO, PO TAH TO

"They’ve got these Lays Stax right next to the Pringles as though they are equivalent. How can they do that?

One is a positive semi-definite quadratic form and the other is an indefinite quadratic form - they’re not even the same definiteness!"

http://fuckyeahphysica.tumblr.com/post/136460893736/food-science-saturday-the-geometry-of-a-pringle