When a stressed person mistakenly does something they shouldn't have, they typically stop doing it after only a small handful of mistakes. We get tired, or bored, or we wise up to our mistake.
When a misconfigured computer does something wrong, it frequently does it over and over and over again until it is prevented from doing so by an external intervention.
No tired private is going to mistakenly rampage through a populated area mowing down civilians. But a confused drone swarm might.
Very good principle but horrifyingly a drugged soldier might. Look up Larium, an anti-malaria drug potentially implicated in wartime rampages. Morally and ethically it raises some weird questions. Sure you can balance the probabilities of death from taking a drug vs not. All drugs have a lethal dose. But most drugs don't kill people who haven't taken them.
When a misconfigured computer does something wrong, it frequently does it over and over and over again until it is prevented from doing so by an external intervention.
No tired private is going to mistakenly rampage through a populated area mowing down civilians. But a confused drone swarm might.