Without defining a timescale, yes, it's very improbable. Feedback loops tend to develop in the markets, where eventually asset prices rise because people buy the assets since they've been rising for a long time. If nothing else happens, that at least is sure to lead to a crash at some point.

Now, whether there's probably going to be a crash in the next 10 years is not something I'd care to bet on, although the odds are far from 0. Overall, the game is not predicting crashes as much as it is being prepared for them when they do come.