Should we change our beliefs based on this post? Based on Dorian's denials today, isn't this post just as likely in the world in which Dorian is Satoshi and the world in which Dorian is not? I don't have a strong belief one way or the other, but this doesn't seem like good evidence.
More interesting question why people even care? I doesn't really matter if this guy or anyone else is creator of bitcoin. Bitcoin is already established, lets say we know for a fact Al Gore invented bitcoin. What changed? Nothing.
