After hearing Alice's argument, I have realized, through Bayesian analysis, that I occasionally log in here with different names, make up complicated background stories, and talk to myself.
In particular, I am convinced that I am in fact Alice, Major Major, Med, Turncoat, Berky Berky, WW3, and Pork.
All these people have employed science, the Occam's razor, and Bayesian analysis. The chances of this happening by chance is so miniscule that, a priori, I find it impossible that I am a separate person from these people.
I conclude that I am both a butterfly and several personalities here on SC, because the probability of the alternative taking place is so miniscule.
I am not entirely sure how this has taken place. Somehow, despite not being aware of it, I keep chatting to myself, switching accounts, and somehow I fool myself into thinking I am talking with an entitty that is separate from myself.
I always wondered why it took me so long to respond as Alice, Major, Med, or Turncoat, when I chat with myself. Now I know why.