Bad article. Noone is just an expert in one thing and can't do anything else. What actually happens is by becoming an expert at something you also learn things

Bad article. Noone is just an expert in one thing and can't do anything else. What actually happens is by becoming an expert at something you also learn things that will help you elsewhere, which means you can pick up other things more quickly. So the choice is either between someone who is an expert in a one thing and knows a bunch of other things, or someone who just knows of bunch of things.