[TeMPOraL]

> I do think the idea of "less interested" is shallow and ignores every other explanation. For example, women are a majority in health care but a minority of doctors. Why?

It's not that shallow. Using your example, the interesting things become visible when you dig down into different types of work done in the medical profession. Scott Alexander has a very convincing piece on the whole topic:

http://slatestarcodex.com/2017/08/07/contra-grant-on-exagger...

The issue of interest is tackled in section IV of the post. If you scroll down to the end of the section, there are interesting charts there, showing gender distribution of doctors among medical specialties. The distribution happens to align nicely with the theory of differences in interests, explored in that section.