@federicomena Inflation.
(Serious answer here: https://www.scientificamerican.com/article/let-s-use-tau-it-s-easier-than-pi/)
@craigmaloney thanks! Ok, I'm sold - https://www.youtube.com/watch?v=jG7vhMMXagQ
@federicomena @craigmaloney here's the most important part for me:
“But pie is yummy" remains one of the more compelling arguments for clinging to the traditional ways of 3.14. But tauists have a response for this as well: on Tau Day you get to eat twice as much pie!
@federicomena The tl;dr is that Tau represents the whole circle whereas pi only represents half the circle, so to do something like 3/4 of a circle is 3/4 tau as opposed to 3/4 (2pi).