Arthur Whitney's One-page Interpreter (1992) 12 years ago
As a guy with a terrible memory, I think of it the opposite way. For Q (and more so K), the actual number of distinct items to remember is very small, as basically anything complex is created by composition of the simple functions/variables. This way you don't need to remember nearly as many libraries/variables/function names, and also the function itself becomes its own description.
That being said, for more production-heavy applications and interfacing with other languages, variable/function naming could be more descriptive :)