BSD is more like: you're free to buy a gun and kill anyone you want. GPL: you're free to buy a gun, but can only use it in self-defense. That's why GPL feels

BSD is more like: you're free to buy a gun and kill anyone you want. GPL: you're free to buy a gun, but can only use it in self-defense. That's why GPL feels "restrictive" - but in a good way - to preserve the freedom of the software in all instances of it.