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Sure. Measure a human's input and output. Play back the recording. Or did you mean across all possible cases? In the latter case see http://lesswrong.com/lw/pa/gazp_vs_glut/

[Ed Fredkin](https://en.wikipedia.org/wiki/Edward_Fredkin) has since sent me a personal email:

> By the way, the story about the two pictures of a field, with and without army tanks in the picture, comes from me. I attended a meeting in Los Angeles, about half a century ago where someone gave a pa...(read more)

I assume the point of the toy model is to explore corrigibility or other mechanisms that are supposed to kick in after A and B end up not perfectly value-aligned, or maybe just to show an example of why a non-value-aligning solution for A controlling B might not work, or maybe specifically to exhibi...(read more)

When I consider this as a potential way to pose an open problem, the main thing that jumps out at me as being missing is something that doesn't allow A to model all of B's possible actions concretely. The problem is trivial if A can fully model B, precompute B's actions, and precompute the conseque...(read more)

I recall originally reading something about a measure of exercise-linked gene expression and I'm pretty sure it wasn't that New Scientist article, but regardless, it's plausible that some mismemory occurred and this more detailed search screens off my memory either way. 20% of the population being ...(read more)

"Does somebody being right about X increase your confidence in their ability to earn excess returns on a liquid equity market?" has to be the worst possible question to ask about whether being right in one thing should increase your confidence about them being right elsewhere. Liquid markets are so...(read more)