Much is being written about a supposed campus rape "epidemic" and a rape culture. Binge drinking and a hook-up culture among college students undoubtedly lead to young women waking up in strange beds with dubious companions and experiencing hangover-enhanced regrets.
The legal response has been a laughably unworkable concept called "affirmative consent." You have to wonder if the next step is requiring a notarized, witnessed statement of her agreement to sex, filed with the Dean's office or the County Clerk.
Megan McArdle writes for Bloomberg View about how current mores require a young woman say "no" in a way that tells a young man "I don't choose to have sex with you" and mean it. Her view of this murky situation seems sensible, I recommend it to you.