They are. But the solution to each might be different. And given the specific argument being contested here is whether beer was drank because it was considered safer, understanding their motives is pretty fundamental to that discussion.
The motives don't always have understanding of the root cause however. We knew that eating raw meat was unsafe even though we didn't know about salmonella.
That's exactly my point. This whole conversation is about whether beer was drank because water was unsafe. Understanding what their understanding of "unsafe" was, and what they considered the remedy, is central to this discussion.
