Sourcing information from one single source and consider it the most trusted is arrogance. If you want to be a well-informed doctor, studying and sticking to the way the information is regimented and taught in the medical schools is a disrespect to your intellectual faculties. If you want to be a notable economist, thinking economy from your business school spectrum is like believing that the earth is the only planet in the universe.
Be a researcher, a serious researcher, a 360-degree researcher, a multi-sourcer. Do your homework. Diversify and keep diversifying. Diversify your information but do not deify it. True science accepts mistakes, arrogance does not.