[kluck]

I would argue it is not about the little facts, such as specific sorting algorithms, but its more about learning how to approach a CS task, how to abstract and how to reason about code. The colleagues I know that were not as lucky and could not study CS, often they just hit a "wall" when they would have to argue about a certain SW architecture for example or when they were presented with an abstract problem, such as implementing some generic behaviour. And learning how to do this is a process that continues after the study, but it is important to get a basis. It is hard to really be specific here but if you do not have a good foundation of knowledge in a field, you will sooner or later (if you are not self-delusional of your abilities) regret it.