Comment by card_zero

Here's a general principle: non-participants can have opinions about our thing (whatever thing that is). If they trot out the same naive dumb lines of thought over and over, and we can't put into words why they're wrong, that's a regrettable failure of discussion, but it's nobody's fault, and they should continue with their aggravating droning until we actually get our act together and find something effective to say in reply.