If you are comparing reading code with reading books, then surely you have read books that have unfamiliar words that you have to lookup the definition, and the

If you are comparing reading code with reading books, then surely you have read books that have unfamiliar words that you have to lookup the definition, and then you might have to recursively lookup the unfamiliar words in the definition as well. Then when you internalized the sub-definitions, then you return to what you were reading and have a better understanding. The difference between code and books is that programmers can freely and naturally define functions. I wonder if some people complaining about too many functions never actually learned how to read code in the first place.