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in that case weapen is the consequence of conflict, not the cause of conflict.

Yes. Hands 🙌 can be weapons if nothing else is available. Being killed by hand rather than a gun is of little consolation to the victim.

Even your teeth, nails are potential weapons. Here it is not about how u r going to die. Rather it is about instrumentalities of violence, and what complimentarities are available.

True, you are right, weapons do not eliminate violence, but they do increase it. It is easier to have a violent attitude and do more damage with weapons than without them.