I think that, except for the pure functional case, code can't be read without running it with a debugger. In imperative and oo there is too much "spooky action from a distance": with global variables, dependency injection or, god forbid, aspect oriented design, things seems to always happen elsewhere. Oh, and the solution to this problem is the same to the "cat -v considered harmful" problem: every program should do one thing and do it correctly, programs should be easy to compose, and interfaces between programs should be easy to inspect.

It is a vicious cycle: if a program source code is bloated, i won't be able to read it and understand it. If I don't understand it, I won't be able to use. Being not able to use it, I will reimplement its functionality in my program. Then, my program becomes bloated.