jar diamond make a point in the first episode that other people of the world do not have animal to domesticate but european do and and that account for why we be able to make steel and invent complex machine . but then in the third episode he say that when the european in south africa get too far north they run into zulu people and other tribe that herd cattle and planted crop . so what explain their lack of technological and economic and and artistic achievement if they have the key thing the author claim be need for success . diamond also claim germ in the form of smallpox ( bring to north america by black slave ) be our big weapon . well and if 150 european can defeat 20 and 000 native warrior and 400 non military south african can defeat 10 and 000 zulu without a single casualty in either case and then i think you have to conclude that germ be irrelevant . with or without germ and we be go to succeed . he say malaria stop european from colonize further north and kill thousand of european while not affect african . ( i would like to know real number but he doesn not say . ) then at the end he say today malaria be kill thousand of african and that be why they can not catch up with u . so which be it and jar . do malaria help the african by halt eurpeans or hurt them . and how come europe do okay despite massive plague throughout our history . he also seem far too eager to say that the reason european succeed be because of dumb luck . at time when the evidence threaten to overwhelm his rickety theory he reluctant to admit that maybe european be successful because they work for it . it sad watch this obvious neo marxist contort reality to try to prove his point .