I don't see how splitting code in multiple modules makes it easier to communicate to others. It forces you to constantly switch places, which, knowing the limit

I don't see how splitting code in multiple modules makes it easier to communicate to others. It forces you to constantly switch places, which, knowing the limitations of the brain with regards to short term memory, would make it harder to keep a mental model. With mixins you don't even know where a particular function might come from, must be a nightmare following a trail when you don't know the code.