Interesting read. My explanation. There are a lot more people that are B class scientists than A class. They are more likely to stumble on new ideas, but they

Interesting read. My explanation. There are a lot more people that are B class scientists than A class. They are more likely to stumble on new ideas, but they might be unable to articulate them or they may not have the audience that will listen. It takes an A class scientist to bring those ideas forward.