Why does knowledge graph portability fail?

The most common reason knowledge graph portability fails: Confusing tool loyalty with knowledge durability. You convince yourself that because you love your current app, it will always exist and always work the way it does today. This is the planning fallacy applied to software. Every tool you have ever used has either already been discontinued, degraded significantly, or will be. The question is not whether your tool will change. The question is whether your knowledge survives the change.

The fix: Open your current knowledge system — Obsidian vault, Notion workspace, Roam database, Apple Notes, whatever you use. Export ten connected notes. Now open the export in a plain text editor. Ask: Can I read the content? Can I see the links? Can I reconstruct the graph from these files alone, with no special software? If the answer to any question is no, you have identified a portability risk. Write down what would need to change for your answer to be yes.

The underlying principle is straightforward: Filing systems come and go but a well-linked graph retains its value regardless of how you browse it.