> This seems like an odd comparison since one doesn't really buy Sage licenses. True in a deep sense. In principle one could collect all the open-source compon

> This seems like an odd comparison since one doesn't really buy Sage licenses. True in a deep sense. In principle one could collect all the open-source components that make up Sage and recreate it independently. Sage resembles gluons more than it resembles protons and neutrons -- it holds together things created by others.