The experience gathered from books though often valuable is but the nature of learning whereas the experience gained from actual life is one of the nature of wisdom.
Our subjective experience of time is highly variable. We all know that days can pass like weeks and months can feel like years and that the opposite can be just as true: A month or year can zoom by in what feels like no time at all.
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Just as we accumulate memories of facts by integrating them into a network we accumulate life experiences by integrating them into a web of other chronological memories. The denser the web the denser the experience of time.