Essays and explainers on the questions behind the programmes. Each note says what kind of writing it is and cites the published work it draws on.
A system that controls a perception acts to cancel disturbances to it, so what it controls shows in what is restored, not in what it does. The test for the controlled variable, and what carrying it from people to learned policies would and would not license.
A depth sounding is one exact reading. A chart is inference between readings, and can be confidently wrong where nothing was measured. The same distinction separates what probing a model's interior shows from what it only suggests.
Why one lab studies learning machines, human minds and simulated worlds together, what it would take for them to be akin, and how that claim could fail.