When is the zombie apocalypse coming?

actually the answer b4 was BS! the zombie apocalypse is way too possible!

1. mad cow disease can become more potent and make mad humans

2. nanobytes can destroy/ overrun brain cortex causing you to do what they want which is eat mainly!

so if u want more answers look it up on google cuz people keep saying that it wont happen but they dont know how possible it is...