After two years of vibecoding, I'm back to writing by hand

But this is exactly what LLMs help me with! If I decide I want to shift the abstractions I'm using in a codebase in a big way, I'd usually be discouraged by all the error, lint, and warning chasing I'd need to do to update everything else; with agents I can write the new code (or describe it and have it write it) and then have it set off and update everything else to align: a task that is just varied and context specific enough that refactoring tools wouldn't work, but is repetitive and time consuming enough that it makes sense to pass off to a machine.

The thing is that it's not necessarily a bottleneck in terms of absolute speed (I know my editor well and I'm a fast typist, and LLMs are in their dialup era) but it is a bottleneck in terms of motivation, when some refactor or change in algorithm I want to make requires a lot of changes all over a codebase, that are boring to make but not quite rote enough to handle with sed or IDE refactoring. It really isn't, for me, even mostly about the inconvenience of typing out the initial code. It's about the inconvenience of trying to munge text from one state to another, or handle big refactors that require a lot of little mostly rote changes in a lot of places; but it's also about dealing with APIs or libraries where I don't want to have to constantly remind myself what functions to use, what to pass as arguments, what config data I need to construct to pass in, etc, or spend hours trawling through docs to figure out how to do something with a library when I can just feed its source code directly to an LLM and have it figure it out. There's a lot of friction and snags to writing code beyond typing that has nothing to do with having come up with a wrong abstraction, that very often lead to me missing the forest for the trees when I'm in the weeds.

Also, there is ALWAYS boilerplate scaffolding to do, even with the most macrotastic Lisp; and let's be real: Lisp macros have their own severe downsides in return for eliminating boilerplate, and Lisp itself is not really the best language (in terms of ecosystem, toolchain, runtime, performance) for many or most tasks someone like me might want to do, and languages adapted to the runtime and performance constraints of their domain may be more verbose.

Which means that, yes, we're using languages that have more boilerplate and scaffolding to do than strictly ideally necessary, which is part of why we like LLMs, but that's just the thing: LLMs give you the boilerplate eliminating benefits of Lisp without having to give up the massive benefits in other areas of whatever other language you wanted to use, and without having to write and debug macro soup and deal with private languages.

There's also how staying out of the code writing oar wells changes how you think about code as well:

If you think through a problem as you're writing the code for it, you're going to end up the wrong creek because you'll have been furiously head down rowing the entire time, paying attention to whatever local problem you were solving or whatever piece of syntax or library trivia or compiler satisfaction game you were doing instead of the bigger picture.

Obviously, before starting writing, you could sit down and write a software design document that worked out the architecture, the algorithms, the domain model, the concurrency, the data flow, the goals, the steps to achieve it and so on; but the problem with doing that without an agent is then it becomes boring. You've basically laid out a plan ahead of time and now you've just got to execute on the plan, which means (even though you might even fairly often revise the plan as you learn unknown unknowns or iterate on the design) that you've kind of sucked all the fun and discovery out of the code rights process. And it sort of means that you've essentially implemented the whole thing twice.

Meanwhile, with a coding agent, you can spend all the time you like building up that initial software design document, or specification, and then you can have it implement that. Basically, you can spend all the time in your hammock thinking through things and looking ahead, but then have that immediately directly translated into pull requests you can accept or iterate on instead of then having to do an intermediate step that repeats the effort of the hammock tim

If you think through a problem as you're writing the code for it, you're going to end up the wrong creek because you'll have been furiously head down rowing the entire time, paying attention to whatever local problem you were solving or whatever piece of syntax or library trivia or compiler satisfaction game you were doing instead of the bigger picture.

Obviously, before starting writing, you could sit down and write a software design document that worked out the architecture, the algorithms, the domain model, the concurrency, the data flow, the goals, the steps to achieve it and so on; but the problem with doing that without an agent is then it becomes boring. You've basically laid out a plan ahead of time and now you've just got to execute on the plan, which means (even though you might even fairly often revise the plan as you learn unknown unknowns or iterate on the design) that you've kind of sucked all the fun and discovery out of the code rights process. And it sort of means that you've essentially implemented the whole thing twice.

Meanwhile, with a coding agent, you can spend all the time you like building up that initial software design document, or specification, and then you can have it implement that. Basically, you can spend all the time in your hammock thinking through things and looking ahead, but then have that immediately directly translated into pull requests you can accept or iterate on instead of then having to do an intermediate step that repeats the effort of the hammock time.

Crucially, this specification or design document doesn't have to remain static. As you would discover problems or limitations or unknown unknowns, you can revise it and then keep executing on it, meaning it's a living documentation of your overall architecture and goals as they change. This means that you can really stay thinking about the high level instead of getting sucked into the low level. Coding agents also make it much easier to send something off to vibe out a prototype or explore the code base of a library or existing project in detail to figure out the feasibility of some idea, meaning that the parts that traditionally would have been a lot of effort to verify that what your planning makes sense have a much lower activation energy. so you're more likely to actually try things out in the process of building a spec

Sure. Like C header files. It's the easiest option - no arguments there.

But there are considerations beyond being easy. I think there's a case to be made that a config file should be data, not code.

> We need to make them implement ALU's on logical gates and wires

Things must have certainly changed since I was a CS student :-/ We did an assembler course in second year, and implemented a basic adder in circuitry in a different course.

This was in the mid-90s, when there was definitely little need for assembly programmers outside of EE (I was CS).