Well, I think a lot would depend on how large and active a pantheon exists in the world in question. If you have a deity of rivers, for example, then rivers presumabley behave in whatever manner the diety in charge of them has dictated. Why do volcanoes exist? Is it the same reason they exist on Earth or is it because the diety of [whatever] said so? I think both are valid explanations. A deity may choose to have things work the same way it does on Earth but in a fantasy world that's hardly a given.
Now, some things are always going to be assumed (like gravity; at least at it's most basic observational level) because it would be too wonky not to.
In some worlds/settings, you have both magic and science but in others magic has effectively replaced science (the world was created by magic, magic is the reason things work the way they do, and the world would fall apart if not maintained by magic). In the latter world a scientist, as we think of one, would more than likely go nuts unless there was a deity of science and/or technology. Deities of knowledge (the closest general equivalent) are more often associated with magic than science (when they're associated with anything else at all).
A world needs to be internally consistent, but it only needs to be externally consistent enough to provide us with a framework we can understand. After that, anything goes; it's your world after all. It's a groups decision what viewpoint(s) they're going to follow but one isn't inherently superior to the other. I would find any such claims (either way) to be rather elitist.
jolt
Now, some things are always going to be assumed (like gravity; at least at it's most basic observational level) because it would be too wonky not to.
In some worlds/settings, you have both magic and science but in others magic has effectively replaced science (the world was created by magic, magic is the reason things work the way they do, and the world would fall apart if not maintained by magic). In the latter world a scientist, as we think of one, would more than likely go nuts unless there was a deity of science and/or technology. Deities of knowledge (the closest general equivalent) are more often associated with magic than science (when they're associated with anything else at all).
A world needs to be internally consistent, but it only needs to be externally consistent enough to provide us with a framework we can understand. After that, anything goes; it's your world after all. It's a groups decision what viewpoint(s) they're going to follow but one isn't inherently superior to the other. I would find any such claims (either way) to be rather elitist.
jolt