I think it's interesting that you can start saying years in the form of twenty ten at 2010, but there are other year forms that we still can't use yet. We used

I think it's interesting that you can start saying years in the form of twenty ten at 2010, but there are other year forms that we still can't use yet. We used to say things like "Back in '86, I saw my first movie" but that form won't sound natural (to me at least) until we get to year 2021.