I've had a few vague answers before, but as I was considering how no one was allowed to do human challenge trials during COVID, I thought I'd ask:

Can anyone come up with an example where a bioethicist actually improved the world?

I'm looking for specific cases, not a general "nazi science was horrible" sort of thing. Is there a record of horrifying things that IRBs have prevented?

If, tomorrow, all bioethicists were fired and IRBs basically disappeared, would that unleash a wave of evil scientists who are barely kept in check now, or would everything be completely fine (even better, possibly)?