Sydney filmmakers, it has emerged this week, are making a documentary about fathers who pretend to breastfeed their new babies. Apparently, the fathers believe that this aids the bonding process. At the same time, a Herald report claims men will soon be able to create babies, without the assistance of any female genetic material. It's great that men want to be women, and women want to be men, but what will it all mean? Here's a list of just some of the ways the world would change if men and women swapped roles: There would be proper paid maternity leave....