Things are not so black and white in most non-trivial projects. The team could conclude that there is an 80% chance of success, while you may think there's only

Things are not so black and white in most non-trivial projects. The team could conclude that there is an 80% chance of success, while you may think there's only a 40% chance of success. If the project fails, does that mean you were right? It's entirely possible that the correct estimate was indeed 80%, but the universe rolled the dice into the 20% zone. Saying "I told you so" may not be the most constructive response. On the other hand, if you are consistently right 9 times out of 10, and the team isn't listening to you, then, yeah, maybe it's time to find another team. But be careful of selective memory: it could be that you are always predicting failure, but you only remember the times when the project failed, not the times when the project succeeded and you were wrong.