Questions. Dr. Andrada is currently a researcher in Edinburgh. She mentions baseball. One, are there baseball league in Scotland? And two, where else did she live? Was this in the UK and the US? I'd also be curious of region in either place, ie: was it a more conservative or liberal region where she lived when she noticed these things. Not that I am denying these things happened to her.

Parenting produces some high school clickish behavior. I was never a joiner in HS or after. My ex wasn't either. We noticed early on, even as married folks, that some couples would pair up. We were part of a broader neighborhood group of young parents at one time, but we never felt like we had to be exclusive to it. It was a little odd to me how frequently they got together.

Crackpot theory? I noticed that for a lot of women, play dates also mean some socialization for the moms, which may put significant pressure on the Mom’s to get along. That was never my case as a single dad, all I cared about was a play date for my daughter. Also, in reciprocation, as someone who worked from home, it meant I could be productive for a period of time. I remember once dropping my kid off for a play date and the Mom expecting/looking forward to conversation and company. That was awkward.