 So here's another question. So the animus, I'm responding not only to the problem of nothing, but also what we might call the problem of change. Now the problem of change for Heraclitus was what's the unity and diversity. I'm not referring to that. Instead what I'm referring to is the question of how things change. So Empedocles says, will things change through love and hate? And Escora says things change through mind. I know you've already answered this, but I just want you to recall to mine really quickly. What do the animus say? What accounts for change?