Methodological naturalists will of course allow that there are some differences between philosophy and science. But they will say that these are relatively superficial, a matter of focusing on different questions rather than any radical difference of approach. For one thing, philosophical questions are often distinguished by their great generality. Where scientists think about viruses, electrons or stars, philosophers think about spatiotemporal continuants, properties, causation or time, categories that structure all our thinking about the natural world. Another common feature of philosophical questions is that they involve some kind of theoretical tangle. Our thinking supports different lines of thought that lead to conflicting conclusions. Progress requires an unravelling of premises, including perhaps an unearthing of implicit assumptions that we didn’t realize we had.