This idea has just come to me.
I find it difficult to retain some things, like the meanings of some words, formulae, the laws of physics etc and this has been something of a drag on my intellectual development in life. It's not an old age thing (though that does not help) but, in intellectual areas, has lasted all my life.
So, very often, I have to review, revise or relearn the same things over and again. My idea is that this "renewal" process means that I often look at things afresh, in different contexts, and spot different facets or aspects each time. Of course, 99% of the time research indicates the idea has been found before but it is new to me in this instance.
Just have to hope that one day, I will have the Answer to Life, the Universe and Everything but, more importantly, spot it and have the courage and means to implement it!