> I have a simpler theory. The apparent speed of the passage of time is inversely proportion the number of memories being accumulated.
I had this same realization. In other words, our internal clock is not like a mechanical, or a quartz watch, with seconds flowing at a constant rate. It's more like a hourglass or a clepsydra, but instead of sand/water, the flow is of bits of information from the world into the brain. As in a hourglass, near the end the flow is weaker (learning is much slower as an adult than as a child), and the same amount of physical time corresponds to much less sand (subjective time).
I had this same realization. In other words, our internal clock is not like a mechanical, or a quartz watch, with seconds flowing at a constant rate. It's more like a hourglass or a clepsydra, but instead of sand/water, the flow is of bits of information from the world into the brain. As in a hourglass, near the end the flow is weaker (learning is much slower as an adult than as a child), and the same amount of physical time corresponds to much less sand (subjective time).