Celebrim
Legend
Well, my fictional world doesn't have real world biology, and it does in fact have humours and spontaneous generation, but the thing about physics based on the pre-scientific world view is that the pre-scientific explanation of the world is that for most observations the pre-scientific explanations of geocentricism and spontaneous generation and so forth explained the observations, otherwise they wouldn't have been believed. So for most purposes, the two concepts will produce identical results. In this case, I don't think the lack of real world biology much changes the expectations of what is in the bag, except that we could add to it spontaneous generation of flies and other decay spreading vectors if we as DM were in the mood to add that.And that's fine... if your fictional fantasy world operates by real-world biology. If, however, there's less germ theory and more humours and spontaneous generation and such, things could get interesting.