Professors have motivations beyond ensuring that the a potential student is capable. For instance, sometimes they need bodies to pad resumes or look good for a

Professors have motivations beyond ensuring that the a potential student is capable. For instance, sometimes they need bodies to pad resumes or look good for a promotions committee. A person with a Ph.D. should have an expert level of knowledge in their field. If a student can’t pass an examination after 3 tries then, in my opinion, it’s time to move on. Would you want as your ER doctor someone who couldn’t pass the USMLE? At some point one has to be able to prove they know material like you and I know 1+1 is 2.