User blog comment:Joe Copp/Call of Duty played longer than humans have existed/@comment-2145732-20130816014840/@comment-46.99.6.159-20130824061727

However, I shall explain this:

Evolution is when a creature (Or species) adapts to changing surroundings via mutations in order to survive.

The earliest discernable (From the Apes) human ancestors came around about the 2-2.5 million BC mark, though it is disputed.

Dinosaurs, on the other hand, lived for 160 million years.

OR if you actually being as dumb, the years means the total man-hours spent playing the game:

If 1,000 people play a game for 1,000 hours, that's a million man hours. It could only just be 1,000 hours of realt time, but it's 1,000 per person.