You really do have to be careful what you say. An offhand comment can come true faster than you can blink.
Last week we had a resident who insisted on walking around when they really aren't able to do so without help. We spent several discussions last week talking about how they were going to break a leg or something before it was all over. Now they're in surgery after taking a bad fall.
Now, you may say that we were just predicting the obvious. Still, I wonder if our talk calls things into being that might not have been created otherwise.