D and I both basically say "why are we distinguishing between apparatus and observer at all?" (answer, probably: b/c 'apparatus' means something importantly different in this essay)

And I would not characterize the boundary between my hands and this laptop to be a function of my visual processing, but I did spend a bunch of time today mapping the concepts involved in the electronic structure of solids, so.

I'm glad that someone has translated quantum mechanics for this audience, but I'm worried that some nuances were lost in the process :/