Some of them are pretty obsolete, reflecting old conflicts and languages that are no longer in use, or obsolete due to hardware advancements, like the quip abou

Some of them are pretty obsolete, reflecting old conflicts and languages that are no longer in use, or obsolete due to hardware advancements, like the quip about lispers not caring about computational performance. But that one is very good advice. A data structure that can represent a tree and be used with filter/map/reduce (e.g. list or array) can get you very far, and the functions can carry semantics instead of names attached to the data.