Proof that .999~=1

www.youtube.com/watch?v=oHg5SJYRHA0

Just chiming in, even though it's a rickroll:

.99999=1 in our written mathematical system, and all practical (not really) applications of it.

Logically .99999=.99999 and 1=1. Too bad you can't write that in number form. We use .99999=1 because it's impossible to work with infinity. It's a flaw in translation and nothing else.