I think this view is true to a certain extend. Having the prior business knowledge definitely helps you to connect the dots early in your business education, and allow you to understand that small nuances. However, there is also value in coming in the b-school with an almost empty cup, such as non-traditionals, absorbing business knowledge throughout b-school. Although, you may struggle a bit in the beginning, eventually, you’ll understand. Both types of student gained something out of the experience, albeit, in a slightly different manner. Furthermore, no one is expert in all aspects of business. Even the investment banker may be a fish out of water in the marketing class.