By advanced, I never mean "better." But I believe there's always
historical progression. A style is new and fresh, eventually it becomes
stale. Some geniuses can milk new things out of an old style forever, but
for most artists, it's diminshing returns, and new styles pioneered by
other creative people let the less groundbreaking artists explore fresh
ground. The goal "progresses" historically, the attempts to achieve that
goal maintain the same relative quality. And some of the goals along the
way are better than others--I think many on the list would say that drill
'n' bass is a pretty uninspiring goal, whhereas, say, a particular genre
of dancefloor jungle holds far more possibilities...