For example, the author has coded for their entire career on silicon-based CPUs but never had to deal with the shittiness of wire-wrapped memory, where a bit-flip might happen in one place because of a manufacturing defect and good luck tracking that down. Ever since lithography and CPU packaging, the CPU is protected from the elements and its thermal limits are well known and computed ahead of time and those limits baked into thermal management so it doesn’t melt but still goes as fast as we understand to be possible for its size, and we make billions of these every day and have done for over 50 years.
Moving up the stack you can move your mouse “just so” and click, no need to bit-twiddle the USB port (and we can talk about USB negotiation or many other things that happen on the way) and your click gets translated into an action and you can do this hundreds of times a day without disturbing your flow.
Or javascript jit compilation, where the js engine watches code run and emits faster versions of it that make assumptions about types of variables - with escape hatches if the code stops behaving predictably so you don’t get confusing bugs that only happen if the browser jitted some code. Python has something similar. Thanks to these jit engines you can write ergonomic code that in the typical scenario is fast enough for your users and gets faster with each new language release, with no code changes.
Lets talk about the decades of research that went into autoregressive transformer models, instruction tuning, and RLHF, and then chat harnesses. Type to a model and get a response back, because behind the scenes your message is prefixed with “User: “, triggering latent capabilities in the model to hold its end of a conversation. Scale that up and call it a “low key research preview” and you have ChatGPT. Wildly simple idea, massive implications.
These abstractions take you further from the machine and yet despite that they were adopted en masse. You have to account for the ruthless competition out there - each one would’ve been eliminated if they hadn’t proven to be worth something.
You’ll never understand the whole machine so just work at the level you’re comfortable with and peer behind the curtain if and when you need (eg. when optimizing or debugging).
Or to take a moment to marvel.