> Some of my best current ideas are old ideas that have been tweaked by experience or external change so they are now relevant. I can't find the reference righ

> Some of my best current ideas are old ideas that have been tweaked by experience or external change so they are now relevant. I can't find the reference right now but it reminds me from a scheme from Feynman. He would keep a few ideas he's very familiar with in mind. Then every time he would be exposed to a new concept, he would consider each of his "core" ideas in light of this new concept.