I think it has something to do with "Memory Palace". You solve the same or similar problem in different contexts. There is something similar and something diffe

I think it has something to do with "Memory Palace". You solve the same or similar problem in different contexts. There is something similar and something different about the problem in all these different contexts. While seeing the different parts you also see the similar parts and can see how those are connected other by the dissimilar parts. It is like seeing a 3 dimensional object from multiple viewpoint. Some things change some stay the same. You understand and thus remember the thing better because you know it's "essence", what is the same about it always.