What should I hand to an AI agent, and what should I keep doing myself?

Hand an agent work that takes you a long time, is easy to check and is cheap to undo: gathering and comparing information, clearing newsletters out of an inbox, filling a routine form, drafting a weekly report from your own files. Keep the steps where a mistake is costly or hard to reverse, such as moving money, accepting terms, writing to people who matter to you, or anything medical or legal, and keep the decisions you enjoy or need to learn from. Ethan Mollick's test weighs how long a task takes you against the time to brief the agent and check its work. The tools draw the same line: dots hand password changes and money transfers back to you, and Google advises against scheduling tasks you find sensitive.