This is not a joke.
I believe I have figured out the 2012 Doomsday theory.
Let's begin.
Take December 21, 2012, and put it in a standard date format: 12/21/12.
Look closely at the date.
Yes, it does consist of 1's and 2's, but let's put those together. 1+2/2+1/1+2.
Add that together, we have 3/3/3.
The "/" symbol is used in math as division.
Standard math, let's do it.
3/3 = 1
1/3 = .33333, repeating.
The 3's are repeating.
There is only one true answer.
Half Life 3 confirmed.