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i also like the backpack analogy

the harness is what you take with you on a trip/task

whatever you take with you is not free (system prompt, tools, skills …)

some models are really good even if you bring almost no skills, tools or system prompt

the harness is the complement to the model

the better the model the more minimal the harness can be

harnesses like pi [0] and smol [1]are on the more minimal end of things

[0] https://github.com/earendil-works/pi

[1] https://github.com/smol-env/smol



Not a bad analogy because the bigger your backpack the slower you walk. With models a big context and tool set degrades performance. So you want the smallest harness/backpack that can do the job.




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