The latest 30 for 30 documentary short from ESPN Films is about the invention of Gatorade, which turned 50 this year. Like most of the company’s films, “The Sweat Solution” is interesting and entertaining. An accompanying blog post on ESPN’s Grantland website opens with a ranking of the five best Gatorade flavors: Citrus Cooler, Fierce Grape, Lemon-Lime, Glacier Freeze, and Fruit Punch. There’s no sense in directly challenging this one person’s rankings. But it did get me thinking about whether others would disagree with them as much as I did.