I’ve been obsessed with computer vision, machine learning, and all things AI for over a decade — and I still genuinely love it.bes-dev.comJoined April 2009
Everything is open source under Apache 2.0, so you can try it in a minute or read the full theory at your own pace.
npm i -g reharness
github.com/bes-dev/reharn…
Deep dive - where Agentic AI meets classic compiler theory: bes-dev.com/posts/reasonin…
In return you get a kind of reliability you can really rely on. The pipeline is stable by its construction, without huge prompts for perfect accuracy, without hidden drift between runs, with static checks confirmed before every run.
Harness engineering is essentially prompt engineering in a new form. The skills and instructions we write raise the chances of success, but they give no guarantees. Every written line stays a recommendation for the AI, and the model can always ignore it at its own discretion.
@rra@NASA Working on RS-25 test software at MSFC — legend status! To be honest, building a 5-year-old React project today is harder than compiling this 56-year-old FORTRAN IV 😄 My favorite find: when altitude goes negative, SSSP prints VEHICLE ATTEMPTED SUBTERRANEAN FLIGHT. Honored!
@planetdeimos That is incredibly cool. It’s a huge privilege to know that the engineers working on SLS might find this weekend project interesting. This code was decades ahead of its time, and I’m just glad to help keep that history alive. Thanks for sharing it, Sean!
@reach_espartan@NASA More detailed information and documentation can be found in the GitHub repository: github.com/bes-dev/sssp. I also provided a general description of the math behind the simulator, based on my analysis of the code.
@MKortvely Wow, thanks for sharing this story! Running a simulation and knowing a shuttle is flying above you along that exact calculated trajectory is practically magic. Especially when you consider the era and the limitations engineers faced building this software.
@samuel_hayden_@macjshiggins To clarify: the "test data" is actual STS-1 telemetry from 1981 vs a theoretical 1970 model. Getting only a 5-15% delta between 1970 math and a physical flight 11 years later just proves the absolute brilliance of the engineers of that era given their limited resources.
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Somewhere between personal truth and probability.
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