Love this post by @rwieruch about using libraries vs. building your own. It was always a trade-off, especially when it came to custom design, but agentic coding dramatically moved the crossover point toward the primitives:
Thomas Dohmke on X: "Love this post by @rwieruch about using libraries vs. building your own. It was always a trade-off, especially when it came to custom design, but agentic coding dramatically moved the crossover point toward the primitives: https://t.co/suyn0GJ5by"
- now I just hope someone does not also go ahead and start writing a hand made cryptographic lib because well what could go wrong, right?
- I’d measure the crossover in lines the team can still review, not lines the agent can generate.
- agents move the crossover point, but primitives still need tests. custom code is cheaper than a library only until you own every edge case.



