Former SFI Professor Brian Goodwin has died at the age of 78. Goodwin was a mathematician, scientist, philosopher, biologist, writer and professor of outstanding caliber and influence. Goodwin became enthralled by the notion that organisms live at the “edge of chaos” and through SFI he began research into complexity theory. His work at SFI led to his writing the book, Signs of Life, with coauthor Ricard Sole, which outlines how the mathematics of chaos and non-linear dynamics can be applied to all aspects of the living world.