Causation doesn't entail change in the agent

Causation doesn't entail change in the agent

The proof for this is very simple. For X to be a cause all that’s required is that X bring about an effect. It’s not required that X change. Yes, change can occur in the cause when it brings about the effect. But it’s not the change that makes the cause a cause. It’s bringing about the effect that does this. Change is accidental to the cause as cause.