A lot of these questions look great if you just finished school, but not so great 10 years later. There are an almost unlimited number of things I can focus on

A lot of these questions look great if you just finished school, but not so great 10 years later. There are an almost unlimited number of things I can focus on that will actually improve my performance on the job, and none of them are memorizing the workings of B-trees just in case I need to use one someday and the internet is down. Computer Science degrees are about laying the foundations so that you can understand things like B-trees when you need them.