There's less impermanence in becoming part of the "stack" (e.g. geometry, algebra, calculus, Kleene algebra, relational algebra, unix, C) or being an inspiratio

There's less impermanence in becoming part of the "stack" (e.g. geometry, algebra, calculus, Kleene algebra, relational algebra, unix, C) or being an inspiration/predecessor of progeny (C again). But that's real hard. I agree with the "play" attitude having a sense of intrinsic value, regardless of newness, importance or usefulness.