It is hard to gain a PhD Many people think that graduating from a PhD program is mostly admirable, as those who graduated often put a “PhD” behind their names. However, the book, the PhD Grind, tells us the tough step of attaining a PhD title in the most famous universities in the United States. The hero, Guo, who is now an assistant professor, suffered great pain of graduating when he was pursuing a PhD of computer science in Stanford. Reading throughout the book, the most impressive part of the book is how few graduate students succeed when they do graduate projects. Guo himself spent more than 2 years on Klee but gained nothing. Neither did his partner, Peter, who later dropped out of the PhD program. From 2006 to 2012, there are only perhaps, two students managed to publish their paper on first-tie conferences. All other students failed to produce reasonable results despite their hard efforts. Some graduate students are lucky enough to produce good publications, while the most do not. Thus, studying PhD programs, especially in the field of natural sciences, is essentially a hard journey. We should be really careful when considering PhD programs, as it may mean several hard years’ torture without satisfying results.