Boris details how Claude Code evolved from a bash-based internal experiment into Anthropic’s primary coding tool—now responsible for ~80% of company code. Its architecture leverages parallel agents, agentic search (not RAG), and a multi-layer 'Swiss cheese' security model to balance speed and safety. His daily workflow relies on plan-mode checkouts, on-device development, and deterministic linting alongside AI review—catching ~80% of bugs before human eyes. Crucially, the tool catalyzed a cultural shift: flat titles ('Member of Technical Staff'), blurred role boundaries, and rapid prototyping (e.g., 20 to-do app variants in 1.5 days). The emergence of Claude Cowork—built in 10 days for non-engineers—underscores how AI expands technical agency beyond traditional developers. As coding becomes more accessible, Boris argues that skills like intellectual humility, cross-domain curiosity, hypothesis-driven iteration, and systems thinking matter more than ever—while outdated distinctions around language preferences or code style fade. The printing press analogy frames this not as job loss, but as a centuries-long redefinition of expertise, literacy, and labor.