This is a mathematical proof that zombies are OP. I found this link and thought I'd post it here.
http://www.mathstat.uottawa.ca/~rsmith/Zombies.pdf
tl:dr
If a zombie infection happens we're screwed unless we get some kind of OP weapon to beat them with
oh and in before OMG THE MATHS JUST EXPLODED MY BRAINS
try to read around the maths I dont think anyone here will be able to understand it, or even understand half of what they're saying but I found it cool none the less