Not the OP, but from skimming the ToC, about 90% of the topics covered are taught in undegrad courses required for graduation for my CS degree. > Because my fr

Not the OP, but from skimming the ToC, about 90% of the topics covered are taught in undegrad courses required for graduation for my CS degree. > Because my friends who do "real CS" at various universities generally avoid anything which has to do with hardware and practical operating systems, and are basically mathematicians working on problems relatable to computers Are they in grad school / doing research? Maybe they're just specializing in those areas (I think it's called theoretical CS).