David Tost argues that most people using AI daily are getting measurably worse at thinking — their judgment flattens and their writing weakens, all while the polished output masks the decline. He shares his own experience of freezing up when trying to write without AI after six months of dependency, which prompted him to completely rebuild his approach.

The core distinction he draws is between using AI as a crutch versus a thinking partner. A crutch gives you answers; a partner gives you better questions. Every time you skip the mental effort by outsourcing thinking to a chatbot, you miss the "rep" — and thinking, like a muscle, atrophies without strain. His foundational rule is simple: always make your own attempt first. Write your messy take, your bad draft, your half-formed argument before engaging AI. This ensures you remain the author while AI serves as the editor, sharpening ideas that are already yours rather than replacing them entirely.

The full system — including specific prompts, daily and weekly workflows, and rules for what to delegate versus protect — is reserved for paid subscribers. But the free portion establishes a compelling philosophical framework for anyone concerned about maintaining cognitive sharpness in an AI-saturated workflow.