"Standing on the toes of giants" is a great phrase. Unfortunately a lot of CS theory really is of limited application. The stuff that is, then takes a very lon

"Standing on the toes of giants" is a great phrase. Unfortunately a lot of CS theory really is of limited application. The stuff that is, then takes a very long time to make it into implementations, and then the implementation has to climb the adoption curve. Facing at every step of the way entrenched users who don't like change. See the C++ -> Rust transition, for example. Personally I like the way that C# has gradually introduced functional-flavor material into an OO imperative language.