"One simple example from everyday life: Imagine that you don’t have in your vocabulary notion of a sum. Therefore, if you would like to tell someone to do a sum

"One simple example from everyday life: Imagine that you don’t have in your vocabulary notion of a sum. Therefore, if you would like to tell someone to do a sum of some things you would always have to express the process of summation in details instead of just telling and then you sum these numbers." If you can encapsulate an undefined idea into one stream of commands, can't you just create a function to do it? What does that say about programming languages? Maybe I missed the point.