Eli5: Why, if at all, does it seem like the years go quicker as you get older?

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I hear a lot of people making that remark, that the years go by quicker as you get older.
For me, at least, it seems like that’s only the case if nothing much changes in my life in that year.
To me, years seem to feel like they go slower if there’s lots of new/different things happening.

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48 Answers

Anonymous 0 Comments

When you are 1 year’s old that year has been 100% of your life. It feels long. When you are 50 year’s old a year is only 5% of your life. Because when we’re younger the total amount of time we have been alive is much higher percentage of your total experience it feels longer.

Anonymous 0 Comments

the more you activly memorize situations, the more you will feel time.

if you have less to look back and if you live in a routine state, you wont be able to presive the spend time

Anonymous 0 Comments

When you are 10 years old 2 years is 20% of your life. But at 50 2 years is only 4% of your lived experience. The comparison of time passing vs time passed overall makes it feel insignificant

Anonymous 0 Comments

Question: How old are you?

Anonymous 0 Comments

Scientific American article suggestion: your eyeball twitches constantly, but that movement slows down as you age. Your time perception moves with it.

Anonymous 0 Comments

Because your brain compares times in terms of how much time it has been alive, a day as a kid seems like an eternity because you really only have less than 10 years to compare it to, so it looks ‘bigger’ for your brain.
When you are an adult days start to be a less significant part of your entire life and your perception of time speeds up.

Anonymous 0 Comments

Your first second is worth all of eternity- in your frame of reference. Your second is worth half of that. Your nth second on earth increases your concept of eternity by this decreasing your sense of time passed.

Anonymous 0 Comments

Work over free time. When you are younger, everything you do is new. When you start working, your job is always the same (at least this is true for most jobs). Over time, all your memories will mix up and sometimes you won’t be able to tell if something happened 10 or 20 years before, because the place was the same and people was the same as well.

Anonymous 0 Comments

I think of it in a purely mathematical way.

When you are 1 year old, the next year will add another 100% to your age.

When you are 100 years old, the next year will add a meagre 1% to your age.

So as you age, each second/day/year are a smaller fraction of your life than any second/day/year you’ve experienced before. Thus periods of time seem less significant as you go through life.

Anonymous 0 Comments

When you’re 10 – a year is a 1/10th of your life
When you’re 25 – a year is 1/25th of your life
When you’re 50 – a year is 1/50th or your life

So the experience of a year is less and less time to your experience of your life as a whole.

It’s all perception. After 30, the years really do start to fly by and just keep getting faster and faster.