She did not get a PhD by age 21. She "completed the coursework," which is meaningless. I completed the coursework necessary for a math PhD by age 18 (two years

She did not get a PhD by age 21. She "completed the coursework," which is meaningless. I completed the coursework necessary for a math PhD by age 18 (two years ago), but I am still writing my thesis, which is the important and intellectually significant part; anyone can take classes.