Comment by jackcviers3
7 days ago
I'll attempt to provide a reasonable argument for why speed of delivery is the most important thing in software development. I'll concede that I don't know if the below is true, and haven't conducted formal experiments, and have no real-world data to back up the claims, nor even define all the terms in the argument beyond generally accepted terminology. The premise of the argument therefore may be incorrect.
Trivial software is software for which
- the value of which the software solution is widely accepted and widely known in practice and
- formal verification exists and is possible to automate or
- only has a single satisfying possible implementation.
Most software is non-trivial.
There will always be:
- bugs in implementation
- missed requirements
- leaky abstractions
- incorrect features with no user or business value
- problems with integration
- problems with performance
- security problems
- complexity problems
- maintenance problems
in any non-trivial software no matter how "good" the engineer producing the code is or how "good" the code is.
These problems are surfaced and reduced to lie within acceptable operational tolerances via iterative development. It doesn't matter how formal our specifications are or how rigorous our verification procedures are if they are validated against an incorrect model of the problem we are attempting to solve with the software we write.
These problems can only be discovered through iterative acceptance testing, experimentation, and active use, maintenance, and constructive feedback on the quality of the software we write.
This means that the overall quality of any non-trivial software is dominated by the total number of quality feedback loops executed during its lifetime. The number of feedback loops during the software's lifetime are bound by the time it takes to complete a single synchchronous feedback loop. Multiple feedback loops may be executed in parallel, but Amdahl's law holds for overall delivery.
Therefore, time to delivery is the dominant factor to consider in order to produce valuable software products.
Your slower to produce, higher quality code puts a boundary on the duration of a single feedback loop iteration. The code you produce can perfectly solve the problem as you understand it within an iteration, but cannot guarantee that your understanding of the problem is not wrong. In that sense, many lower quality iterations produces better software quality as the number of iterations approaches infinity.
>> Your slower to produce, higher quality code puts a boundary on the duration of a single feedback loop iteration. The code you produce can perfectly solve the problem as you understand it within an iteration, but cannot guarantee that your understanding of the problem is not wrong. In that sense, many lower quality iterations produces better software quality as the number of iterations approaches infinity.
I'll reply just to that as it being the tldr. First of all tech debt is a thing and it's the thing that accumulates mostly thanks to fast feedback iterations. And in my experience the better the comunication, to get the implementation right, and the better the implementation and it happens that you can have solid features that you'll unlikely ever touch again, user base habit is also a thing, continuing on interating on something a user knows how to use and changing it is a bad thing. I'd also argue it's bad product/project management. But my whole original argument was why we'd need to have a greater speed in the first place, better tooling doesn't necessarily means faster output, productivity as well isn't measured as just faster output. Let me make a concrete example, if you ask an LLM X to produce a UI with some features, most of them will default to using React, why? Why can't we question the current state of web instead of continue to pile up abstractions over abstractions? Even if I ask the LLM to create a vanilla web app with HTML, why can't we have better tooling for sharing apps over the internet? The web is stagnant and instead of fixing it we're building castles over castles over it
Tech debt doesn't accrue because of fast feedback iterations. Tech debt accrues because it isn't paid down or is unrecognized during review. And like all working code, addressing it has a cost in terms of effort and verification. When the cost is too great, nobody is willing to pay it. So it accrues.
There aren't many features that you'll never touch again. There are some, but they usually don't really reach that stage before they are retired. Things like curl, emacs, and ethernet adapters still exist and are still under active development after existing for decades. Sure, maybe the one driver for an ethernet adapter that is no longer manufactured isn't very active, but adding support for os upgrades still requires maintenance. New protocols, encryption libraries and security patches have to be added to curl. emacs has to be specially maintained for the latest OSX and windows versions. Maintenance occurs in most living features.
Tools exist to produce extra productivity. Compilers are a tool so that we don't have to write assembly. High-level interpreted languages are a tool so we don't have to write ports for every system. Tools themselves are abstractions.
Software is abstractions all the way down. Everything is a stack on everything else. Including, even, the hardware. Many are old, tried and true abstractions, but there are dozens of layers between the text editor we enter our code into and the hardware that executes it. Most of the time we accept this, unless one of the layers break. Most of the time they don't, but that is the result of decades of management and maintenance, and efforts sometimes measured in huge numbers of working hours by dozens of people.
A person can write a rudimentary web browser. A person cannot write chrome with all its features today. The effort to do so would be too great to finish. In addition, if finished, it would provide little value to the market, because the original chrome would still exist and have gained new features and maintenance patches that improve its behavior from the divergent clone the hypothetical engineer created.
LLMs output react because react dominates their training data. You have to reject their plan and force them to choose your preferred architecture when they attempt to generate what you ask, but in a different way.
We can have better tooling for sharing apps than the web. First, it needs to be built. This takes effort, iteration, and time.
Second, it needs to be marketed and gain adoption. At one time, Netflix and the <blink> tag it implented dominated the web. Now it is a historical footnote.Massive migrations and adoptions happen.
Build the world you want to work in. And use the tools you think make you more productive. Measure those against new tools that come along, and adopt the ones that are better. That's all you can do.