Functional Requirements for Bibliographic Records (FRBRBRBBBBBRRR)

Does this look complicated?  Does it look a wee bit overwhelming?  Am I required to know this?  Is FRBR great?  Or is it just another way of retrieving information that will have to do until we figure out the ultimate information retrieval tool?  Will we ever?  Can it just be that there are some ways of sorting and retrieving that work better for some things but not all?  Why is my Pug so itchy?  Why can't I find very much online about CCO?  I like the DDC!  I think it's good!  I don't know about LC yet because I'm looking more at cataloging and that's more MARC stuff.  Am I missing something?  Can anyone answer my questions?