I have three kids: a five year old, a three year old, and an infant. They all cry when they get tired. I did too, when I was their age. Now, as an adult, I k

I have three kids: a five year old, a three year old, and an infant. They all cry when they get tired. I did too, when I was their age. Now, as an adult, I know that they're only crying because they're tired. But they, as children, aren't self-aware enough to realize that. Neither was I, when I was their age. When I was in high school, I was restless, but I didn't realize it was because I needed some physical activity. I was bored, but I didn't realize that sitting passively for 90% of the day wasn't "normal". I felt like a nuisance, but I didn't realize that I shouldn't. Every teacher was a high school student at some point, but the memory they formed were not formed with the self-awareness they possess as adults. Re-experiencing the same conditions a decade or two later is enlightening precisely because you understand yourself so much better.