When you finish a bachelor's degree, you know everything.<p>When you finish a Master's degree, you realize you know nothing.<p>When you finish a PhD, you realize nobody else knows anything, either.
Meaningless spam, advertises as a guide to PhD and gives a few meme images. Academia is very political, I saw senior folk looking down on writing actual code while glorifying corruption and the publishing of fraudulent or meaningless papers. These are closer to the realities you have to deal with getting a "PhD", even in computer science.