 maybe break down some of the core principles, concepts. And how has the use of design thinking in the military context evolved over the years? All right, so that is the focus of my first book, which is through Rutledge. And that book is titled Understanding the Military Design Movement. And it's basically my dissertation, all the work I did for my doctorate. It's sort of like creativity and innovation and leadership. You were to say, what is the catch-all definition? I think one of them, it comes from a designer, Buchanan, in 1992.