This is the longest episode in the series because we talked to so many people. It is a general survey of the state of modern fatherhood. We speak to a family that has three members: a lesbian couple and the gay father. We speak to somebody who lived among the Aka tribe in the Congo who are the world’s greatest fathers, who even occasionally breastfeed their children. We travel to Japan and attend classes in fatherhood for men who have no experience of living with their own children. It is a profoundly moving journey which shows that fatherhood, while being redefined constantly, remains vital.

Internet pornography is increasingly one of the dominant issues of human sexuality. YouPorn alone is four times as big as the website for CNN. The effects of this vast new force on our sexual lives, and on the lives of our sons, are still totally unknown. I mean, Internet pornography arrived in my life in my mid-thirties and it threw me. Imagine what it must be like for a fifteen-year old boy. We talk to pro-porn people and anti-porn people. We also discuss porn with a porn star - “the smallest cock in the hall of fame” - who happens to be one of the most wonderful, loving fathers we spoke to in the whole show.

I was more scared about giving my kid a phone than about anything else I have exposed him to. Imagine what he can do with it. It’s like giving him a bottle of bourbon and a gun at the same time. Here we look past the fear and the hype: What are the advantages of having your kid on a phone (knowing where they are, increasing their social exposure)? What are the disadvantages? It’s all very well and good to say, "the less technology the better." But the technology is so damn useful.