In all fairness to ajax, I believe he is asking these questions about how many years this man spent researching for his doctorate, because this has been Ajax’s exposure. For example if say a person was on a job interview and they asked about high school and the interviewee stated he did not graduate then the interviewer would ask more detailed questions like: Did you take Algebra II, History , how many years did you attend etc.. But if the person graduated then that’s all the information they would need to know.
The same with a doctorate. You will notice degrees on the wall of your doctors office. There is no information pertaining to number of years spent doing research or which classes he took, just the date of graduation and field of study and, of course, the school that awarded the doctorate degree.
People typically ask questions which are asked of them and I think this is why ajax is asking for this information. But the rest of us know once you attain your diploma/doctorate the degree speaks for itself. I am sure someone besides myself will fill him in also.