The Download: alternative aviation fuels, and drone-delivered bubble tea

June 2020 Venture capitalists sell themselves as the top of the heap in Silicon Valley. They are the talent spotters, the cowboys, the risk takers; they support people willing to buck the system and, they say, deserve to be richly rewarded and lightly taxed for doing so. This largely white, largely male corner of finance has backed software companies that grow fast and generate large amounts of money for a shrinking number of Americans--companies like Google, Facebook, Uber, and Airbnb. But they don't create many jobs for ordinary people, especially compared with the companies or industries they disrupt. And things have been slowing down.