Why invest in women and girls?

Poverty is bad. How's that for over-simplification of a complex issue?

That is from a very nice blog post by Laura P. Thomas.

She goes on to say:

When women and girls earn income, they reinvest 90 percent of it into their families, as compared to only 30 to 40 percent for a man.

Sometimes complexity obscures and simplification illuminates. If you want to get a simple primer on why we should invest more in women and girls, read this post.