Harnesses Explained: The Inner and Outer Workings of the Coding Agent Harness

This is a great write up, I specifically love the graph and the distinction between the outer and inner harness.

I often wonder, typically in feverish coding sessions trying to enhance my 'outer harness', how much of this outer harness will eventually be brought into the inner harness? That is, how much of this outer harness engineering will become obsolete very shortly when Claude et al make similar enhancements to the inner harness?

Can you provide any heuristics here? Are there any members of the outer harness that you think are especially worth engineering? Are there others that you think will soon be obviated by upcoming improvements to these agent providers?

Also, I recommend doing a quick proofread of the figure in the article, there are some typos and some bullets seem unfinished. For example "Specificatints" in the outer harness should likely be "Specifications". The bullets under there have a syntactical mistake as well. In the loop part of the image, under "Improve Feedforward" the parenthetical isn't closed and it's an incomplete sentence. There are likely other typos.