Feynman’s approach encouraged him to follow his interests wherever they might lead. He posed questions and constantly
Creating strong and clever connections between disparate areas of knowledge can appear to others to be a flash of genius, in part because they didn't have the prior knowledges nor did they put in the work of collecting, remembering, or juxtaposition.
This method may be one of the primary (only) underpinnings supporting the lone genius myth. This is particularly the case when the underlying ideas were not ones fully developed by the originator. As an example if Einstein had fully developed the ideas of space and time by himself and then put the two together as spacetime, then he's independently built two separate layers, but in reality, he's cleverly juxtaposed two broadly pre-existing ideas and combined them in an intriguing new framing to come up with something new. Because he did this a few times over his life, he's viewed as an even bigger genius, but when we think about what he's done and how, is it really genius or simply an underlying method that may have shaken out anyway by means of statistical thermodynamics of people thinking, reading, communicating, and writing?
Are there other techniques that also masquerade as genius like this, or is this one of the few/only?
Link this to Feynman's mention that his writing is the actual thinking that appears on the pages of his notes. "It's the actual thinking."