It is... but the book knowledge version of fundamentals and their actual implementation are completely different when you start asking questions. Even more so

It is... but the book knowledge version of fundamentals and their actual implementation are completely different when you start asking questions. Even more so when those "fundamentals" are implementation details you don't think about much in your day to day job. Actively recalling knowledge that has become part of your intuition and understanding of the world is hard. I know enough about many things to do basic implementations safely; everything else is paged out to google. The finer details of database transations? Usually not my job, but I used to know more about them and could relearn that information quickly if needed.