I don't think that's really plausible that it wasn't intentional. Daniel Ellsberg's recent book "The Doomsday Machine: Confessions of a Nuclear War Planner" has

I don't think that's really plausible that it wasn't intentional. Daniel Ellsberg's recent book "The Doomsday Machine: Confessions of a Nuclear War Planner" has a pretty good analysis of how we went from the idea of bombing civilians being considered barbaric at the start of the war, to purposely incinerating cities full of them and attempting to create "firestorms" to make the damage even worse (Munich, Dresden, Tokyo, etc.) in just a few short years. I think the worst thing people could take away is that the nuclear bombs were outliers - the conventional fireboming of Tokyo a little earlier killed more people than Nagasaki and Horishima combined. It was shocking that one bomb could do what we'd previously employed hundreds or thousands to do, but it was just the culmination of several years of intentionally bombing civilians.