Addy Osmani, who works on the Claude Code team at Anthropic, warned in a Tuesday X essay about "cognitive surrender" as AI agents take over more of his work, writing that "increasingly, nothing in my day-to-day forces critical thinking on me now that so much of my work runs through agents." Osmani described three types of diminished thinking with AI use: "cognitive offloading," delegating tasks while retaining ownership; "deferral," where AI's output becomes your new input; and "cognitive surrender," a term coined by two researchers at the Wharton School, meaning complete trust in AI outputs, which he described as lazy and said creates "cognitive debt" when done too often. He did not want engineers to stop using AI but to build critical thinking into their day, writing: "Where the stakes are low, feel free to delegate entirely," and "When you can't explain the answer to a question, even by way of your agent, you've ceded ownership." He shared questions he asks himself, including "Did I formulate a hypothesis before asking?" and "What am I no longer practicing?" and urged engineers to build "verification as a habit," asking the AI agent what it could and couldn't verify. He warned that skills you stop exercising "are going to go away, and probably faster than you might guess."