Nice to see a good explanation (if a little painstaking) of this. "Ad hominem" is fast becoming the new Godwin ... Having said that, I hope that people don't

Nice to see a good explanation (if a little painstaking) of this. "Ad hominem" is fast becoming the new Godwin ... Having said that, I hope that people don't think this gives everyone license to abuse each other. Regardless of whether it's part of your argument, insulting or ridiculing someone rarely helps progress an argument forward.