David Cahn is a Sequoia Capital investor who specializes in AI infrastructure and believes the most durable value in AI will come from owning compute resources like servers, steel, and power rather than application-layer tools. He frames the current AI boom as a capital-expenditure super-cycle comparable to railroad buildouts and actively writes detailed public essays to refine his investment theses, while focusing on companies positioned at the intersection of AI, infrastructure, and strategic industries. David Cahn is a Sequoia Capital investor who specializes in AI infrastructure and believes the most durable value in AI will come from owning compute resources like servers, steel, and power rather than application-layer tools. He frames the current AI boom as a capital-expenditure super-cycle comparable to railroad buildouts and actively writes detailed public essays to refine his investment theses, while focusing on companies positioned at the intersection of AI, infrastructure, and strategic industries.