Something rotten is like a cancer — it rots things around it. If someone has something wrong with their body, there may be many causes, and the solution may require different approaches. Similarly, if someone holds ideas that intoxicate their logic, it can rot their thinking across different contexts.
There is some truth to the idea that in a group of friends, a rotten apple can spoil the others. And that can certainly happen with teenagers who want to belong to a group. But being an adult is not immunity. I think it is more about a developed mind that knows itself well enough — Nietzsche's Übermensch, perhaps — a mind that cannot be rotted by lower ones. There are different levels of villains and heroes, just as there are different levels of rotten apples and developed immunity.
How can we develop immunity? I am thinking — theory and practice both matter here. We need a frame with principles and values — such as the Golden Rule — but more importantly, as experiential beings, we need experience. Some people think that being evil makes them wiser because it gives them more experience — but that is a bit like saying someone needs a religion to behave well. There may be correlation, but not causation.






