I’m curious what the metaphor about distance from “the truth” is about. Different understandings afford different perspectives, and for some definitions of what you mean about truth and distance, it may seem correct that later theories often seem like improvements over earlier ones, particularly because they are usually framed inside the perspectives of the previous theories they surplant. And there’s a related but subtly different metaphor, which is about time and paths, and more or less defines the history of ideas as progress along a path. But I wonder what the distance is that is converging, and whether there’s an expectation that there is something that would be considered the truth, and some sense of dissatisfaction with all theories that are not that the truth? Also, sometimes an actual scientific revolution means a shift in perspective that’s so different from previous perspectives that the course isn’t really just a line in one direction.