roughed out "people" section plus minor read-through edits

-did a read-through to situate myself and made minor stylistic edits
-roughed-out the parts about people (S 2.3 and S 3) which I think
should be in the same overall section and maybe put under the
conclusion or something since it's going to be much shorter than the
other top-level sections. I'm not quite sure what else to put here,
additions welcome.