worker productivity a lot of those things are rooted in the system of enslavement back at the farm fred byrd is torn about the issue i wish it had never happened. i think a lot of faith would been much better everywhere had that not happened but never on the sly and none of the black people who live around here and i were ever of why not i may have had ancestors. that were why but that's 150 years in the past. no matter how far in the past the traces of enslavement will forever remain a part of the american history. let's pick up on some of the points where you started made in not reporting for joining us so a lot of german corporations were built on slavery too but what's new about the debate in the u.s. . well i think what's really new is the recession of 22000 a really sparked a lot of people to look more deeply at the origins of american capitalism and it's this story that we tell ourselves in this country about how wonderful american innovation was at the turn of the century and that slavery was not just really a part of that and so a lot of historians of the past decade or so are going