I like information entropy as an explanation for this. https://en.wikipedia.org/wiki/Entropy_(information_theory) https://en.wikipedia.org/wiki/Entropy_(informa

I like information entropy as an explanation for this. https://en.wikipedia.org/wiki/Entropy_(information_theory) https://en.wikipedia.org/wiki/Entropy_(information_theory) As we get older, life becomes more routine. Fewer unique experiences = less space taken up in memory = later years appear to have moved faster in retrospect.