It's Already 6 PM? Yikes! How Did That Happen? What Are We Going to Do About Dinner?

Most educated people are dimly aware that time is relative-- clocks run slower when gravity is stronger and movement, confounded by the speed of light, makes time go faster as objects diminish in size-- but these ideas are generally categorized as impractical abstractions, necessary to our understanding of the medium-sized Newtonian physical world which we inhabit; however, James Holt brings up a more mundane example in his essay "Time-- the Grand Illusion?" (which is included in the entertaining and excellent essay collection When Einstein Walked with Gödel: Excursions to the Edge of Thought) when he points out that research indicates that people in their twenties, when asked to estimate three minutes of time, are quite accurate, but people in their sixties, when asked to do the same task, miss the the mark by an average of forty seconds-- their internal clocks are running relatively slower in comparison to the young folks-- and so three minutes and forty seconds feels like three minutes of clock time . . . the older you get, the more prevalent this phenomenon is, which is why really old people drive so slowly-- anything over 22 MPH and they're in a subjective Indy 500-- and it's why when you are young, a summer can feel like eternity . . . Holt makes the (rather depressing) claim that by the age of eight, "one has subjectively lived two-thirds of one's life" and so that whole "I'm 48 years young" euphemism is complete bullshit . . . I'm 48 years old and that's incredibly old, in the scope of my subjective life, and even though it is summer, time is hurtling by for me, while my kids are experiencing each day in a more accurate sense-- they are 13 and 14-- and in a much less epic sense than when they were 6 and 7 . . . but, of course, there is no accurate sense-- everyone's time is relative to their age and metabolism and internal clock, so Einstein's theories aren't so far out and abstract, after all.