There are two historians of business at the University of Maryland, Brent Goldfarb and David Kirsch, who have done some extremely interesting work, much of it still unpublished, on the history of major innovations.

For example, President George H. W. Bush s National Security Adviser, Brent Scowcroft, made sure that powerful cabinet secretaries had full access to the president.

He's a Republican I won't say anything about my party affiliation, but anyway so this is my dear, dear Brent Williams, and this is on toughness, in case anybody needs to know about being tough for the work that you do. I think there's a real lesson in this.