Well, whether or not specializing in one technology is good for your career depends on your career goals. Being an expert in one obscure technology is an excel

Well, whether or not specializing in one technology is good for your career depends on your career goals. Being an expert in one obscure technology is an excellent way to become a consultant. If you don't want to spend your career maintaining someone else's code, then it's probably a bad idea to specialize in one technology.