I read a book once that claimed Fritos were the pinnacle of western civilization, the perfect delivery mechanism for fat and salt. Which is a little scary to be honest.
Informative article about the founding of the Fritos company. Apparently the inventor was a vegetarian and health-food nut who didn't eat many himself, and ate his without salt.
http://www.npr.org/2007/10/18/15377830/the-birth-of-the-frito
Tortilla chips according to Wikipedia are properly distinguished from just corn chips by having gone through the process of nixtamalization. Which is a thing I know about because of learning about pellagra for a post on this forum! So, tortilla chips, no pellagra, Fritos, yes pellagra.
Regardless, I like the big scoops Fritos with chili and cheese.