Tastes vary. Not about being mocked, that sucks, but about what's important and interesting. When I was in college I borrowed algorithms textbooks from a CS student to study for fun but never took a single CS class because I didn't want to do the "boring" stuff she was doing for class like writing Telnet clients and kernel modules and implementing parts of the network stack. I loved the books that concentrated on theory and yadda-yaddaed how it might be applied in the real world. Ten years later my tastes were reversed; I was sick of math but really curious about nuts and bolts. So don't assume people are put off by focusing on theory and dismissing everything else as "Googleable"! For some folks it's exactly what they're looking for.