If PG is to have a hope of citizen-provided proofing, crowd or otherwise,
there are two non-negotiable design requirements.

The page images must be available as the basis for resolving all questions
about content (understanding they aren't always unambiguous, but no
images is hopeless.)

The text must have the page numbers embedded as data so the error
submission process includes the ability to easily confirm the text with
the image.

People will self-verify if they are given the tools. If they can't, the
whitewashers are screwed again.