I think he misrepresents Russell and also Godel in ways. I enjoyed the book when I was young and it did launch my interest in logic but reading Godel’s personal writings, he had great respect for Russell and literally wrote in a paper defending Russell that he would not have made his discovery without the Principia Mathematica, because it showed him an instance of a consistent language and then he took the further step of noticing you could do this infinitely. My recollection was Hasshelhoff thought Russell was a kind of dunce who didn’t know what he was doing. He was putting in the fucking work for others to build on, and it was incredibly hard work if you read Russell’s autobiography of that time.