LLM Inevitabilism

In the 90s a friend told me about the internet. And that he knows someone who is in a university and has access to it and can show us. An hour later, we were sitting in front of a computer in that university and watched his friend surfing the web. Clicking on links, receiving pages of text. Faster than one could read. In a nice layout. Even with images. And links to other pages. We were shocked. No printing, no shipping, no waiting. This was the future. It was inevitable.

Yesterday I wanted to rewrite a program to use a large library that would have required me to dive deep down into the documentation or read its code to tackle my use case. As a first try, I just copy+pasted the whole library and my whole program into GPT 4.1 and told it to rewrite it using the library. It succeeded at the first attempt. The rewrite itself was small enough that I could read all code changes in 15 minutes and make a few stylistic changes. Done. Hours of time saved. This is the future. It is inevitable.

PS: Most replies seem to compare my experience to experiences that the responders have with agentic coding, where the developer is iteratively changing the code by chatting with an LLM. I am not doing that. I use a "One prompt one file. No code edits." approach, which I describe here:

https://www.gibney.org/prompt_coding

> This is the future. It is inevitable.

"This" does a lot of unjustifiable work here. "This" refers to your successful experience which, I assume, involved a program no larger than a few tens of thousands lines of code, if that, and it saved you only a few hours of work. The future you're referring to, however, is an extrapolation of "this", where a program writes arbitrary programs for us. Is that future inevitable? Possibly, but it's not quite "this", as we can't yet do that, we don't know when we'll be able to, and we don't know that LLMs are what gets us there.

But If we're extrapolating from relatively minor things we can do today to big things we could do in the future, I would say that you're thinking too small. If program X could write program Y for us, for some arbitrary Y, why would we want Y in the first place? If we're dreaming about what may be possible, why would we need any program at all other than X? Saying that that is the inevitable future sounds to me like someone, at the advent of machines, saying that a future where machines automatically clean the streets after our horses is the inevitable future, or perhaps one where we're carried everywhere on conveyor belts. Focusing on LLMs is like such a person saying that in the future, everything will inevitably be powered by steam engines. In the end, horses were replaced wholesale, but not by conveyor belts, and while automation carried on, it wasn't the steam engine that powered most of it.

Just try to imagine what you would have thought about this technology if you saw it with no warning, 10 years ago. Would "a few tens of thousands of lines of code" still seem small?