Katherine Boyle is a former Washington Post reporter who created the "American Dynamism" thesis at Andreessen Horowitz—a $600M fund that treats startups in defense, aerospace, housing, and infrastructure as a major investment category rather than niche impact investing. She bridges Silicon Valley and Washington DC by investing in hard physical-world companies that rebuild civic institutions, arguing that founders working on these problems are performing public service to restore middle-class basics like housing, education, and safety. Katherine Boyle is a former Washington Post reporter who created the "American Dynamism" thesis at Andreessen Horowitz—a $600M fund that treats startups in defense, aerospace, housing, and infrastructure as a major investment category rather than niche impact investing. She bridges Silicon Valley and Washington DC by investing in hard physical-world companies that rebuild civic institutions, arguing that founders working on these problems are performing public service to restore middle-class basics like housing, education, and safety.