Comment by olh

Brazilian CS undergrad here. Although this is a 50's view, some aspects are still valid.

I study in a technical park inside one of the biggest hydroelectric dams in the world. Some of my professors are renowned engineers working in the dam; but many others are unqualified and became professors just by passing an admission test.

The thing is: my university is public and once you are in, as a professor or student, you will only get out if you decide so or if you do something seriously unethical.

So, as a professor, if you are in, you can do almost whatever you want: you won't be fired. You can produce shitty research papers because you do not need to have "results" like in the private sector; and it's the same for the teaching.