Over the years I've read a lot of arguments from both sides: China's growth will continue for a quite long time vs. it'll end soon. Both have some valid and int

Over the years I've read a lot of arguments from both sides: China's growth will continue for a quite long time vs. it'll end soon. Both have some valid and interesting points and I'm still not convinced either way. But there's a more general theme I find interesting. If you are to predict how long something is going to last, given it already lasted longer than its peers, there are always two kinds of thinking: a) it's already stretching itself so it'll end soon, or b) the fact it already lasted this long means our references are not correct, and this could last a lot longer than we thought possible.