There is a concept I learned from a mentor of mine a few years ago. This article explains it better than I could. Apply the same thing to education by imagining how much easier it would be (and how much simpler the solutions would be) to have people who have a varied background working to solve a problem. If each of them have only focused on one field without going indepth with any others, they would all be at a disadvantage. Not only does having a varied educational background give you a common "language" in order to communicate and understand different concepts, but it opens your eyes to new, more creative ways to solve problems in everyday life and in the feild you're interested in.
Another example: I hated working in InDesign. It was confusing and complicated and I didn't understand it after first. However, it is the most efficient tool for creating print layout and booklets. I could do page by page in Illustrator or Photoshop, but it would decrease the quality of work and take me a lot longer. It was better for me to bite the bullet and learn InDesign and I'm a much better, varied designer for having done so.
Another example: I hated working in InDesign. It was confusing and complicated and I didn't understand it after first. However, it is the most efficient tool for creating print layout and booklets. I could do page by page in Illustrator or Photoshop, but it would decrease the quality of work and take me a lot longer. It was better for me to bite the bullet and learn InDesign and I'm a much better, varied designer for having done so.