Is Pi (yes Pi not P.ie) wrong ?

I'm not a mathematician, but I found this little paper surprisingly interesting and readable. Bob Palais says in it "I know its blasphemy to some, but I believe Pi is wrong".

LINK TO PAPER

Is Pi a Lie ? and should mathematicians come clean?

That guy just wants to call pi 2pi. That would be just comparing the circumference to the radius instead of the diameter. You can't have your pi and eat it 2.

He makes a fair point I suppose. But he is just arguing over nomenclature as Youndan says.

Besides, the vector magnitude of the periodic circle function repeats twice over the 2pi period, so it's not that difficult to remember.