most people trained in our subjects are aware of is the 00:28:22 phenomenon of slavery among non farming populations and actually the classic example is precisely that of the the indigenous societies of the Northwest Coast who are known to have kept slaves 00:28:36 who were actually hereditary slaves in their households which were organized on these highly stratified aristocratic sort of lines what nobody seems to have 00:28:48 been interested up to now is why this practice of keeping slaves seems to sort of fizzle out and stop as you head south into what is now broadly speaking the 00:29:00 area of coastal California