I find it hard to draw a bright line between sabotage by ignorant hubris and sabotage by intentional malice. People believe all sorts of idiotic things with ut

I find it hard to draw a bright line between sabotage by ignorant hubris and sabotage by intentional malice. People believe all sorts of idiotic things with utter confidence, then act on those beliefs to the detriment of others. Many of the worst things to happen in the past few decades happened because of ignorant hubris.