as the the problem of solipsism i think i would be a lot more selfish if that where the case plus i would be running the world. but if nothing exist outside my mind then how could anything exist at all. am i to believe that my brain through who know what created a complex mathematical system which i only halfway understand yet understand more of as i grow older. and where does the idea of time come from! i certainly couldn't have thought that up. but solipsism can't really be defiantly disproved. i doubt it, and it still leaves the question of where did you come from.