"Zero is not even or odd."
"Zero could be even."
"Zero is not odd."
"Zero has to be an even."
"Zero is not an even number."
"Zero is always going to be an even number."
"Zero is not always going to be an even number."
"Zero is even."
"Zero is special."
Just so you know (not just for this comment)--you are my favorite HN user. Everything you post is either funny, quirky, or extremely interesting (mostly all of the above).
And, to add to this (I'm not being snarky), he could be the father/grandfather of many HNers. I recall one of his comments about how he was doing stuff on computers in 1965.
https://en.wikipedia.org/wiki/Parity_of_zero#Education
Claims made by students:
https://en.wikipedia.org/wiki/Teach_the_Controversy