I personally think that war is not an evolutionary advancing behavior, I think war comes into play when disconnection from the earth and ourselves increases and we as a species try and grasp onto other harmful actions to try and give as self worth or meaning. If we as a species aren't experiencing peace and growth in consciousness we tend to gravitate towards anger and greed to make our egos feel useful and elated. One of the best was to fuel anger and greed is war. Nothing can be grown from war other than pain, suffering and an increased grasping on negative emotions and material wealth. War destroys the collective consciousness of a species or society. With the issue of shamanism and schizophrenia i do not think that they are linked at all as shamanism is a non obsessive path of mental wisdom where as schizophrenia is an obsessive, boxed in, delusions of grander and fantasy state of being. I think that people who drift away mentally while on a shamanic journey are indeed mentally lost and indeed not schizophrenic there is quite a large difference. I have observed both schizophrenic people and completely mentally lost people due to psychoactives and the main difference is that schizophrenic people live in a fantasy world that is over lapped with the so called real world, where as the completely mentally lost person (due to psychoactives) is usually completely lost in the fantasy world without any overlapping of the so called real world of any kind.
Much Peace
Much Peace