>But perhaps the most damaging aspect of all this is the erosion of truth, in people’s general feeling that nothing can be trusted.

Might this be an opportunity for crypto education? Digital signatures are pretty powerful.

No. Adding cryptography to video recordings is the worst of both Canudos. It can verify sources but not the literal truth. All that would do is half-mirror society where any ole bullshit signed by the credible is accepted while man on the street police brutality or politicians making out with a 12 year old are called fake.

You can trust what you see in person, without screens.

I've seen many an up close magic trick in person that I've been unable to figure out. In person only prevents digital shenanigans, not _all_ shenanigans.

Which would be fine if we still lived in small tribes of hunter-gatherers, but we don’t.

Wait for augmented reality glasses to become a thing