Неподобство та ін.

there is a Star Trek episode about a trauma of war and genocide, i can't recall the season an the name of it, but it was an abandoned planet with a monument that tricked your consciousness into believing you are a participant of the events, the traumatic ones, the events that you truly believed are a part of your life. It was supposed to make those who encounter it, to feel through the conflict between humanoids, feel the pain of it, to make sure you will never repeat the mistakes of warring against your own. A beacon in cosmos. Can we have a vaccine against war? I don't think so. This is so sad, that we cannot.