  It is not immediately clear how this refutes the reversibility objection. If we focus on the fact that the reversed state is “exceptional”, and take it to belong to those cases (“regular motions”) that were explicitly barred in the statement of the theorem, then his reply is like that to Loschmidt. But perhaps his central idea here is rather that in the reversed motion, \(H\) increases for a short while, but will eventually decrease again, and continue to do so. In that case his defence is more like the reply to Tait. In actual fact the two are hard to combine. If we admit that the reversed state is exceptional in the sense that the statistical H-theorem does not hold for it, we have no grounds for claiming that eventually \(H\) will decrease again.