This implies converting someone from slave to free should increase their life by 20+ years, approximately half the life time of a free person. Just multiplying, using 1 free person dead = 41 years lost, one slave freed = 21 years gained, we pass a cost benefit test.
Not quite. The lower life expectancy due to slavery may be the result of early malnourishment, say, which manumission would not fix.
I've seen, but have not investigated, arguments that the civil war and emancipation of slavery led to lower life expectancy among former slaves, and those sorts of claims should be addressed in this calculation.
One historical note I was not aware of until several months back, which was covered in a few books on related subjects which I read at the time, was that for more than a decade after the Civil War, the standard of living and level of equality experienced by recently free blacks was actually quite high. The levels of prejudice which led to the passage of the Jim Crow laws were actually cultivated by deliberately targeted propaganda by upper class industrialists who feared the political threat of lower class white and black laborers acting together as a voti...
People want to tell everything instead of telling the best 15 words. They want to learn everything instead of the best 15 words. In this thread, instead post the best 15-words from a book you've read recently (or anything else). It has to stand on its own. It's not a summary, the whole value needs to be contained in those words.
I'll start in the comments below.
(Voted by the Schelling study group as the best exercise of the meeting.)