I think it is becoming possible to argue objectively that there has been a stagnation or cessation of cultural development - actually more obviously in music than film, but it's the same thing I think.

I was at a bar recently and noticed them playing "show me love" by robin s, a dance tune released in 1990. What struck me was that it did not stand out at all from the rest of the music being played - it wasn't any sort of golden-oldie.

That track was released 33 years ago. If you had done the same in 1990 you'd be playing a tune from 1957 - which would be inconceivable to happen without it being some sort of novelty or stunt. Almost all the development of modern music happened in that time - and I would argue that essentially zero further development happened since. In 1990 we had everything we see now - all the main genres and even subgenres of dance, electronic, hip hop, indie. There have been no more than minor variations.