I remember editing my then girlfriend’s (now wife) papers in university, when she was struggling to explain something succinctly. I’d ask her: well what are you trying to say? And she would explain it to me, clear as day. “Just write that.”
Buying buckets of used bricks is pretty cheap, too. I bought an adult's old lifetime collection for $30 CAD. My 2 year old son and I are still sorting them.
I have been enjoying building a CD and vinyl collection recently. IMO there is no better listening experience than putting a disc on a reasonably high end sound system, and sitting down with the liner notes and reading about what you are hearing. No screens, just music. It’s really quite something these days.
My 2 year old son is also enjoying this process. There is something magical about him asking to “see” the music, and getting excited about the album art. Some of his music requests are based on the album art — usually ones that actually depict the musicians.
Replacing a CPU means replacing a motherboard - this is mostly true for desktops too. And by the time you’re ready for a new CPU there is almost certainly a new type of RAM to get.
I think a lot of families actually restrict or eliminate screen time altogether, and gather round using either no technology, old technology, or new technology that imitates old technology, e.g. Yoto. There is value found in reducing our technology use. Some people may want to avoid AI on ethical grounds, or may be cautious about the cognitive effects of its use.
I convinced my wife to start using a password manager, too (Bitwarden). Now she stores all of her very guessable, short, similar passwords in a manager. Sigh.
Doing a U-turn generates less heat, but still quite a bit. The train will have to slow down depending on the radius of the curve, and even then the turn will slow it down some more.
But yeah, less heat generation means kinetic energy is conserved.
Cars have to slow down when they turn because it’s too much to ask of the tires to accelerate (throttle) and turn, since turning is in itself acceleration.