Even accepting the premise that this is an indication of having a distinct personality, I don't think that's an adequate basis to afford infants personhood. Cats have distinct personalities as well, although this fact suggests that we could really use a better word than "personality." In fact, while there might be counterexamples that are not coming to mind, I'm inclined to suspect that every properly functioning vertebrate organism, as well as many invertebrates, has a distinct personality, albeit not necessarily one recognizable to humans.
Which is a really good argument for granting other vertebrates personhood.
What do you believe that most people on this site don't?
I'm especially looking for things that you wouldn't even mention if someone wasn't explicitly asking for them. Stuff you're not even comfortable writing under your own name. Making a one-shot account here is very easy, go ahead and do that if you don't want to tarnish your image.
I think a big problem with a "community" dedicated to being less wrong is that it will make people more concerned about APPEARING less wrong. The biggest part of my intellectual journey so far has been the acquisition of new and startling knowledge, and that knowledge doesn't seem likely to turn up here in the conditions that currently exist.
So please, tell me the crazy things you're otherwise afraid to say. I want to know them, because they might be true.