Still, if truth is the aim, where’s the progress? Wouldn’t philosophy do better simply to hand things over to science, with its proven track record? Well, one answer to this challenge is that philosophy has been doing exactly that for some time. According to the “spin-off” theory of philosophical progress, all new sciences start as branches of philosophy, and only become established as separate disciplines once philosophy has bequeathed them the intellectual wherewithal to survive on their own.So what's going on with the questions philosophy retains, where progress is not so evident? Questions like free will, the basis of morality, the nature of knowledge, and the like?
There is certainly something to this story. Physics as we know it was grounded in the seventeenth-century “mechanical philosophy” of Descartes and others. Similarly, much psychology hinges on associationist principles first laid down by David Hume, and economics grew out of doctrines first developed by thinkers who called themselves philosophers. The process continues into the contemporary world. During the twentieth century, both linguistics and computer science broke free of their philosophical moorings to establish themselves as independent disciplines.
According to the spin-off theory, then, the supposed lack of progress in philosophy is an illusion. Whenever philosophy does make progress, it spawns a new subject, which then no longer counts as part of philosophy. In reality, philosophy is full of progress, but this is obscured by the constant renaming of its intellectual progeny.
Well, those questions are really hard.
