Forget to add "already been done" or "too trivial a problem" after "2.1 Solving the world". The secret to being a PhD is enough knowledge of the field to choos

Forget to add "already been done" or "too trivial a problem" after "2.1 Solving the world". The secret to being a PhD is enough knowledge of the field to choose the "right size problem" to churn another paper in six months, a degree in four years, and tenure in seven years. There are fields outside my own where I have significant book knowledge. But I dont know enough about the research frontier to choose the right size problem.