Self supporting theory

It's risky to build one theory on the back of another (as aesthetic philosophers tend to do with Kant). For all its restrictions at least science demands we should test our ideas (even if in doing so we sometimes test for the outcome our theories lead us to expect). What philosophers can do is point out how complex phenomena are, which in many cases is far beyond the capacity of science to investigate. What science can do is show that what we might naturally assume to be the case is very often not; it forces us to reassess our intuitions.