Jean Chatzky, NBC’s Today Show financial editor met up with Jon Birger, author of “Date-enomics: How Dating Became a Lopsided Numbers Game,” at New York’s Washington Square Park. They talked about the economics of dating, the decline in marriage rates and America’s shortage of college-educated men. This chat lead to the question, “Is the growth in online dating to blame for a hook-up culture?”

Birger answered, “There was that Vanity Fair story which blamed hook-up culture on Tinder. Tinder I think is barely 4 years old. The hook-up culture certainly existed before Tinder. I don’t think online dating has had as big of an impact as others think.”