I'm having trouble reconciling this point. How can you continuously increase your effectiveness exponentially in a particular role? Take being a developer for example. Seems like the progression of skill is usually linear (with some variability). Is Sam saying that investing in becoming a great engineer ins't effective if your ultimate goal is to be extremely successful? I feel like this is overly reductionist. Maybe being an engineer for your entire career isn't going to lead to that massive success, but spending part of your career cultivating that skill does provide indirect benefits that can help you become super successful. For example, being able to rapidly prototype an MVP when you are testing product ideas. Building a business is the high-leverage action that could lead to massive success, but the years you spent cultivating your technical ability could be what enabled you to be able to build the MVP in the first place. Or maybe it allowed you to recognize good technical talent if your first engineering hires. I think exclusively focusing on tasks that provide orders of magnitude improvement is too direct and superficial of an answer. I'd be interested in hearing people's thoughts.