It's true that a dangerous combination of certainty and ignorance often shows up around sex and consent on campus. People on all sides of the issue have such strong feelings about it that they're blinded to the facts.

Once Donald Trump announced that Betsy DeVos was going to be his Education Secretary - a few months before I finished the manuscript - I had a pretty good idea of what was going to happen. He was going to overturn as much of what Barack Obama did, and the attendant social progress, as he could.

Students at residential universities often live together and spend time on activities that aren't connected with the university. Then, should the university's rules about sexual consent extend to students' private lives? In my book, I argue that these narrow rules should extend to students' private lives no matter what or where they happen to be conducting those lives. The logic is that sexual assault is a form of discrimination and denies the victim an equal education. The point of university life is to get that diploma and nothing should stand in the way.

I also believe that upending ingrained ideas about what assault is a gun to the head, a stranger, a parking lot and what consent looks like a woman who gives a no really means yes is very messy. And part of the messiness is some students - and yes, usually these are liberal students - over-determining the definition of assault.

I don't think we get the degree to which technological mediums like Snapchat and Instagram are also changing our relationships. I think we will learn down the line that they have created profound changes in our social and sexual lives.

We need new cultural scripts. Women don't say what we want, and we don't say what we don't want. Unless we're reacting to a stranger, we generally aren't great at turning down someone's advance.

I make a strong case for poor sexual communication as the root cause of some assaults. I say some assaults because we know, as well, that there are dyed-in-wool, compulsive predators like Harvey Weinstein on campuses too. But there are guys we can reach here. Once again, I'd like to be optimistic in the way that we look at this problem.