Stephen Grey was interviewed for the Project Controls Podcast series a while ago and the result is now available online at http://projectcontrolspodcast.com/blogs/news/48529025-episode-7-creating-value-from-uncertainty-with-dr-stephen-grey

It describes some of Broadleaf's work and includes a discussion of how risk modelling fits in with decision making as well as what sort of personal characteristics are useful for working in this field.