I found it especially useful for balancing research breadth vs research width when exploring new topics. A graph structure makes it easier for me to identify potential blind spots in the research process and allows me to be more confident that no promising alternative solutions were left out while at the same time not getting too stuck in rabbit holes of subquestions.

When I built my prototype I had this image of a physarum slime mold [0] in my head that branches off into all directions first, then reinforces potential paths while starving off all other branches. In the end that path that survives is the result.

[0] https://carolinalombardi.com/physarum-polycephalum