When I say or write something, there are actually a whole lot of different things I am communicating. The propositional content (i.e., the verbal information I'm trying to convey) is only one part of it. Another part is stuff about me, the communicator. Everyone knows this. It's a function of the fact there are so many different well-formed ways to say the same basic thing, from e.g. "I was attacked by a bear!" to "Goddamn bear tried to kill me!" to "That ursine juggernaut did essay to sup upon my person!" and so on.
