Half Life Math or "Half Life 3 chances"

This is a thing that will show how likely it is that a Half Life 3 will be made.

Half Life (Original) to Half Life 2 (Original)| 6 Years

Half Life 2 (Original) to Half Life 2: Episode 1| 2 Years

Half Life 2: Episode 1 to Half Life: Episode 2| 1 Year

Conclusion, since its been 6 years since the last half life game, I say we still have a chance. Wouldn't count on it though. :P