Computer Science is an odd field.
In the early 1970s, IBM failed to produce a multitasking, multi-user timesharing system that customers could stand.
Academic researchers developed VM, a virtual machines system. IBM's lack of a coherent operating system vision became a non-issue because a site could run different operating systems at the same time under VM. Circa 1980 a mainframe developer would spin up an OS instance in a VM, and spin up more OS instances in the VM if they want to run more tasks.
Although many think of mainframes as dinosaurs, it took PCs 30 years to get to that point.
There is part of computer science which is timeless, which is part of mathematics. There is also part of it that is so future-oriented, that the ideas will only bear fruit 20 or 30 years from now.
The 4-yr university aims to educate you for a lifetime, not to get your first job.
