>>105724705What have classes to do with anything? A PhD requires contributing results that push the state of the art. Almost all programs require 1st author peer reviewed publications, the others require work judged as equivalent by the jury. The jury is composed of at least a dean's rep, your profs, an internal rep not part of your labs with no previous relations, and an external (likewise).
To become a prof requires getting a position within 7 years of getting the degree and is flooded with 300-500 applications for every position of top applicants. It requires at least 1 year of postdocs, but the average successful applicant has 4. Getting a poatdoc requires getting your first postdoc within 3 yeara of getting your degree. Every postdoc is flooded with applications at a rate typicaly exceeding 500:1 even at noname labs. Currently, between steongly reduced funding and a bad job market pushing people back into academia, it's 100x worse.
You cannot get a postdoc without at least one first author publication at a top journal during the PhD. Having 8 publications including 3 at top venues, 2 of which wwre first author but that was all before the PhD? Into the trash it goes. If you can't get a publication out during your first year of postdoc, you don't get a second year and will not be able to get a faculty position.
It's extremely xommon for people to work themselves to death on this path since 16 or 18 and still end up being permanently barred from academia after the PhD..
Also, if you ecer dare get a job to make ends meet you're basically out because "you sold out". Meanwhile academia pays less than minimum wage until 5 years into a faculty position.