As told in Genius: The Life and Science of Richard Feynman byJames Gleick
Forte cleverly combines a story about Feynman from Genius with a quote about Feynman's 12 favorite problems from a piece by Rota. Did they both appear in Gleick's Genius together and Forte quoted them separately, or did he actively use his commonplace to do the juxtaposition for him and thus create a nice juxtaposition himself or was it Gleick's juxtaposition?
The answer will reveal whether Forte is actively using his system for creative and productive work or if the practice is Gleick's.