The Bare Metaphysical Possibility of Bare Dispositions

Many philosophers hold that all dispositions must have independent causal bases. I challenge this view, hence defending the possibility of bare dispositions. In part 1, I explain more fully what I mean by "disposition," "causal basis," and "bare disposition." In part 2, I consider the claim that the concept of a disposition entails that dispositions are not bare. dispositions necessarily have distinct causal bases. In part 4, I consider arguments by Smith and Stoljar that there can't be bare dispositions because they would make for unwelcome "barely true" counterfactuals. In the end, I find no reason to deny the possibility of bare dispositions. It is asked what the cause and reason are of opium's making one sleep. To which I respond: because there is in it a dormitive virtue whose nature it is to put the senses to sleep.