From a profile in Slate:
"Mattis is an evangelist for risk with two core principles. The first is that intellectual risk-taking will save the military bureaucracy from itself. Only by rewarding nonconformist innovators will the services develop solutions that match the threats conceived by an enemy that always adapts. The second is that technology cannot eliminate, and sometimes can't even reduce, risk. Mattis warns about the limitations of sophisticated weapons and communications. They can be seductive, luring military planners into forgetting war's unpredictable and risky nature, leaving troops vulnerable."