dispersion to convergence

There are many many things in this world that forms dispersion to convergence. The way you learn, the political argument, human thinking, this kind of process occurs in every domain. For example, when having argument, first you will come up and share some ideas, and this is dispersion, and by arguing, the ideas become more sophisticated and some of them are declined that the argument becomes convergence.
However, there is also the opposite direction of process of this. Convergence to dispersion. For example, learning English, the most efficient way I believe take this form, when learning how to listen and read, we first take cautious way of learning, meaning we spend more time on one or a few materials, and keep this practice. And as the learner gets better, he decreases the amount of materials that are for detailed learning, and instead of that, increasing the amount of materials for more rough usage of materials. This is calles "taking English shower"
It is interesting that phenomenons take a different process interms of dispersion and convergence. Each phenomenon can take the other one of course, but that will make it much less efficient. This finding implicates we need to be careful about this. But, we naturally take the best form. Amazing.