After watching some “Pi is Wrong” videos by Vi Hart (on Khan Academy) my son showed me the Tau Manifesto. He started laughing when I said, “Wait, wait, that means…” and then scrolled up to show exactly what I was astounded to realize. Then, at the perfect moment for clinching a sale, he clicked on the link to buy the Tau Day t-shirt. In my excitement, I bought one for each of us: https://teespring.com/tauday#pid=369&cid=6521&sid=back. We’ll be ready for June 28th!
Tau Manifesto: http://tauday.com/tau-manifesto