EVERY BILLABLE HOUR IS AMATEUR HOUR

Summary from the TLDR newsletter

Software engineers can become agnostic about business outcomes as they optimize for versatility and feature shipping efficiency. This can become an issue if they decide to become freelancers as becoming a freelancer forces them into a business owner position. Becoming a professional business owner means becoming an expert in delivering outcomes that add value. Working by the hour makes this goal harder to achieve and it also creates a worse experience for both the freelancer and their clients.