After 6 years I still don't understand this

x^y

y = 0

y = 4 - 4

x^(4 - 4) = x^4 / x^4 = 1 :O

I totally just said that.

And, I'm pretty sure 0 ^ 0 is also undefined Locked, but:

http://www.math.hmc.edu/funfacts/ffiles/10005.3-5.shtml <- this.