Pardon my french, but...

NEWSWEEK YOU DAMN IDIOTS!

For the last time, centuries start with year 1. Decades start with year 1.

Ask your kid to count to ten. DO THEY START WITH ZERO AND END WITH NINE?! NO!

But when the year 2000 rolled around, and the fourth digit changed from a one to a two, everyone hopped on this "its a new century, let's write tons of articles about the last 100 years," even though the century wasn't over yet! Was the First Century from year 0 to year 99? No, it was from 1 to 100. All base ten counting starts with 1 and ends with zero (moving the one over one place, obviously).
So why is Newsweek making this blunder, again? Because they want to be the first mag to write "looking back" articles. They can't be late to the "looking back" game, they must be there first. So why let a thing like "math" and "logic" get in the way, let's declare 2010 the first year of a new decade...I mean, it is, if you go on the assumption that 2000 was the first year of the new century...and therefore the first year of the last decade...