And yet, these things are easily comprehensible facts without you needing to understand how to implement an LL1 parser. More generally, I can always come up wi

And yet, these things are easily comprehensible facts without you needing to understand how to implement an LL1 parser. More generally, I can always come up with something you can't understand without some specialised knowledge. I could argue that you couldn't possibly be a computer scientist / software engineer unless you understand the foundations of digital logic -- how else to understand safe implementation of crypto, caching and VM? Who cares about big O when people write pointer hungry code that faults to main memory every cycle? I guess we might both be arguing for 'knowing what we don't know' and where to start looking.