> If you take this model literally, that your experience of an interval reflects what fraction of your life the interval is

I don't accept that premise. I'm in my mid-fifties now, and a year is still a long time. They years get short if you fall into a routine and never do anything new, but it is easy enough not to fall into that trap. And I say that as someone who thrives in doing the same routine every day. I get my variety in the details, doing different projects, having different conversations, trying new foods, exploring new places.

> Childhood memories have an intensity and a vibrancy that it is difficult for the rest of life to match.

I've found that we all have different memories. I know people who cannot remember their childhood at all, and I've known people who remember it well. But not having vibrant memories of your adult life? That feels a little depressing. Adulthood is when you step up and become your own self, directing your own life. It is when I climbed mountains, explored the world, met new people, tried different careers, moved to new towns, had long-term relationships including children, created art, studied subjects beyond the standard high school education. Childhood was OK, but was fairly anxiety-filled, at least for me. The truly amazing experiences in life were as an adult.

The author addresses this, of course. But he does so in a really odd way:

> This works, to a point, but there are only so many firsts for you, and chasing this exclusively seems to lead to resentment. You remember the things you had as a kid. You remember the excitement and warmth of that world, how immediate and raw everything felt, and you want to go back.

This is where my reaction was: "Dude, wat??" If adult experiences make you resentful, something is really off. If a good experience makes you wish you could go back to being a child, I'd be recommending therapy because that is not the reaction most adults have to new experiences. I don't say that to be mean, either - if your childhood memories are that much stronger than adult ones, that is not the typical human experience, and I would sincerely be asking for medical and psych support to figure out if something is wrong.