i would refer you to brad wilcox's work which is very important in this regard. there's something about marriage that drives people to church. not just fertility. and also i should be clear of course this is not come in making the point about fertility on the make some kind of argument like family of 12 is ipso facto or more religious than family of one. it's not about stuff like that but marriage disappeared to have an independent effect on churchgoing, especially male churchgoing. i know that would really surprise the guys in the room. >> we will go to the back. >> josh with aei. one of our colleagues has just put out a new book, nick schultz, call home economics, the economic consequences of changing family structure. i wonder if you might speak to the link between family structure and work along the lines that you just have been describing. he says along the lines of the new normal for people are under the age of 30 is child out of wedlock. now just over 50%. he tells a story that without the norm of two-parent families it is more and more, for people and bus