I think people are always surprised when I explain in detail how exhausting normal conversation can be. I mean, they can see/hear me struggling with the words sometimes, but they don't pick up on stuff like bodily strain, increased heart rate, sweat, having to come up with alternate words or entire sentences on the fly, and still keeping track of what you were trying to say. But the more we explain these things to people, the more it's likely to spread as general knowledge, right?