How do you say this year? Is it two thousand and ten or twenty ten?
I was asked by a student, and given that I had been thinking about this topic, gave them more of an answer than they were probably looking for.
Personally I prefer twenty ten, because:
1. It’s shorter and easier to say.
2. It is more consistent (like nineteen seventy).
Both are currently valid, and there are still some lingering two thousand and somes out there, but I am confident that twenty some will win out in the end. What do you think? Do you have a preference?