It's a fair question. I don't know. But the causal ordering here shouldn't change how we feel about Twitter. As an analogy, it's a bit like if you have a cand

It's a fair question. I don't know. But the causal ordering here shouldn't change how we feel about Twitter. As an analogy, it's a bit like if you have a candidate running on a racist platform in an election. Maybe you can validly ask whether they are causing racism or whether the racism is causing them; but either way you shouldn't vote for them.