2- He Didn’t Like Biology
Hawking used to love mathematics even as a child. His father, Frank, wanted him to pursue medicine but Stephen was not interested in Biology, saying that he found the subject overly detailed and inexact, which is why he wanted to do something that had precise and structured concepts. Problem was, Oxford was not offering Mathematics as a major at that point, which is why Hawking chose Physics as his major. He was given the option of deciding between particle physics and cosmology and he chose the latter, even though the legitimacy of the field was in doubt back then.