Well, it used to be that being a scientist wasn't a profession at all. Most science was done by the independently wealthy. In many fields, today, to be an ama

Well, it used to be that being a scientist wasn't a profession at all. Most science was done by the independently wealthy. In many fields, today, to be an amateur you need to be independently wealthy as well. Most science requires a lot of expensive equipment. The "amateurs" he spoke of were using techniques that required little money (data analysis, pen and paper math)