Monday assorted links

1. “We find that likely-unplanned C-sections reduce the probability of subsequent childbirth within four years by 28 to 34%, while planned procedures have small and statistically insignificant effects.”

2. “Risk of myocarditis is higher after Covid infection than after vaccine.”  For young people, yup.

3. Claims about Tokyo’s train system.  Princeton job market paper.

4. Matt Y. on the game theory of some of the Democrats conceding.  And thoughts from Sam Stein.

5. Japanese buzzwords of the year?

6. Only five countries have no Swiss citizens living there.  It seems it would be more efficient for that number to be higher?

7. The #1 country song is AI-generated?

8. Efforts toward genetically-engineered babies (WSJ).  And the “fertility awareness” movement (NYT).