[mfdaniels]

I actually think that "longevity" is a better term. But I only realized that after I wrote the article. Here's another version of the article that never really was released, which focused on longevity over timeless: http://poly-graph.co/timeless/nodiggity.html

We only have two data points in this work: today and release date. So longer trends like the one you pointed out might be lost in time.