Cowboy Ventures founder and managing partner Aileen Lee, previously a partner at Kleiner Perkins Caufield & Byers, talks with Recode's Kara Swisher about being one of the few female venture capitalists in Silicon Valley. After leaving Kleiner Perkins in 2012, Lee set out to amass data about the small percentage of startups that become breakout success stories, and she coined the term "unicorn" to describe the small fraction that would be valued at more than $1 billion. She says entrepreneurs today have to be tougher now that investors' fervor has cooled off, and says those investors will have to change, too, by becoming more diverse.