Time passes, I guess.

I am reading a book that was published in 2001 for a paper I'm writing for one of my classes. As I read the about the studies they cite that were preformed in 1998, I feel like this source is getting to be a little dated. In 1998, I was, like, 10. Weird. I remember when it was the requirement for "current" sources had be be 2000 or later.