For millions of years, most parents have learned together how to parent their children. It’s perfectly natural. They recall their own childhoods, watch, listen to and learn from others and each other. They accommodate any differences. And for much of the time, they will do a good job of it. But when they separate, parenting becomes a cause for arguments. Suddenly, parents behave in a way that they wouldn’t have done had they not separated. Courts cannot resolve these problems but a parenting plan can.