Machines designed and built by men, first of all. And secondly, there's no machine that actually installs the internet cable, or fixes the transformer, or insta

Machines designed and built by men, first of all. And secondly, there's no machine that actually installs the internet cable, or fixes the transformer, or installs your toilet. That's all done by hand, by men. It's not just size and strength either, there are very stark differences in visual-spatial reasoning, among other mental differences.