on travelers accounts and other secondary sources about with slave labor fight for what what plantations loctite, et cetera, et cetera in order to build a picture of how the slaves would've felt or with the plantations of lake and down like in the sorts of things. it's piecing together a complex mosaic of fragmentary evidence into a narrative. >> daniel, i'm amazed at the kind of tactical knowledge that the slave revolt pad. i'm curious and how do you surmise that she came up with this knowledge or came up with the type takes to read this, especially the organizational capabilities. >> absolutely coming? organizational ability. slave drivers were very aware of organizing large and complex groups of people. sugar planting is a very difficult thing to do. it requires immense technical skills, involve sophistication of the process of granulated sugars is one of the more industrial processes available at the time. and i charles the sophistication to run a plantation was very good or can it groups of people. so then the question becomes if we know these men were good theaters, could organize and exec