“If you pay a man a salary for doing research, he and you will want to have something to point to at the end of the year to show that the money has not been wasted. In promising work of the highest class, however, results do not come in this regular fashion, in fact years may pass without any tangible result being obtained, and the position of the paid worker would be very embarrassing and he would naturally take to…
Additionally, having a relaxing job with lots of free time doesn't just free you to explore hard problems, it also promotes creativity. This is because stress is the ultimate creativity killer. Thus these sorts of jobs are really a recipe for deep thinking.