The bill for reparations would be a big one. Boris Bittker, a Yale law professor, argued 40 years ago that the simple way to figure who gets what is to multiply the number of blacks by the difference in white and black income. In 1973 this would have come to $34 billion, and a lot more than that now. By now that money would have all been spent, and the cash would have hardly put a dent in the difference. ... Reversing the constitutional formula of counting slaves as three-fifths of a free — i.e., white — person, done to...