https://www.researchgate.net/publication/38061313_Men_and_Th...
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We synthesized evidence from interest inventories over four decades and found large sex differences in vocational interests, with men preferring working with things and women preferring working with people.
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Engineering can be said to be involved with "things" and "med schools" with people?
Informally we could perhaps translate that to "Just because men like to sit in a cubicle all day and invert binary trees (a small pun on Google's hiring practices https://twitter.com/mxcl/status/608682016205344768?lang=en) that everyone else, namely women, should enjoy doing same". I mean, they might and many do, but it is not an obvious thing like it is often presented and it should be discussed. Of course, we can then ask where do those interests come from and some will say because of how people are socialized and others will say because of hormones and other biological differences.