No manager is going to lose their job by hiring 10 Python and JavaScript engineers to accomplish what could be done with 1 Elixir engineer. And that’s how most

No manager is going to lose their job by hiring 10 Python and JavaScript engineers to accomplish what could be done with 1 Elixir engineer. And that’s how most time and effort is allocated in our tech labor market economy. It’s by working backwards from “I want to still have a job in tech next year.” The number of people who are calculating which language to write in by thinking “how can I write a fault-tolerant distributed system with less time and energy so that I can quickly release performant products” is minuscule. The lack of popularity of Elixir is evidence of this I think. In regards to your point on ZIRP: billions of dollars have been poured in to LLMs that are biased toward legacy languages like Python and JavaScript. Even the file structure of these languages is conducive to LLMs. A HTTP server can be and is frequently defined in a single file or function, where everything from socket creation to connection handling to request parsing to database queries to response can be composed in literally a few lines of code. This immense expressiveness is a testament to the power of HTTP. But as I’m sure we’re all aware there are limits to what can be accomplished with a single machine serving these stateless requests, and the limit can be reached very quickly. But LLMs gravitate towards producing these haiku-like incantations, it’s trivial for them. Elixir’s power comes from having a well-defined API and explicit failure modes for each of these layers, each in their own expressive modules. This makes it difficult for LLMs to write Phoenix code when they’ve been optimized to output a 3-line FastAPI decorator-definition-query endpoint. Each of these layers in Phoenix is by itself quite simple, each layer has about 2-4 required functions to be implemented, and Phoenix can generate all of these for you. But ChatGPT doesn’t seem to be able to grok it all at once the way a good engineer can after readings the docs for an afternoon. Will Elixir survive an era of programming where RTFM is a lost art? I suppose we will find out soon enough!