Shared mutable state is just one cause of accidental complexity. In section 4.2 of the paper, they also talk about "Complexity caused by Control". Quoted: > Th

Shared mutable state is just one cause of accidental complexity. In section 4.2 of the paper, they also talk about "Complexity caused by Control". Quoted: > The problem with control is that very often we do not want to have to be concerned with this. Obviously — given that we want to construct a real system in which things will actually happen — at some point order is going to be relevant to someone, but there are significant risks in concerning ourselves with this issue unnecessarily.