By insisting that there is such a thing as boys and girls. This should be one of those things where Christians - and believers in all historical religions and basic common sense - come together and affirm the truth of the proclamation. We'll see. So far, the usual suspects react with jumping up and down and screaming and insisting science must prove them right - which will happen since that's where the money is. Whether the post-conservatives will swallow their pride and affirm the existence of sexual reproduction and boys and girls will remain to be seen.