I wonder if the way the author describes it, ie. new memories are just diffs against older experiences, is scientifically grounded. I came up with another expl

I wonder if the way the author describes it, ie. new memories are just diffs against older experiences, is scientifically grounded. I came up with another explanation: My thought processes have slowed, so the world has sped up, relative to myself. Is there scientific evidence for either explanation?