A very simple hypothesis of how the consciousness work
The consciousness is useful to push the frontier of what we know; it learns the new things.
When we already learned something, the unconsciousness executes the easy things, what we already know.
If something fails, the unconsciousness asks the consciousness to take control, see what’s wrong, and solve it.
What the unconscious does is to automatically complete with what the consciousness have learned. For instance, when we are writing an A, we don’t think consciously about the – in the middle of the A. Probably, we aren’t even thinking consciously about the words. We are using the consciousness for the high-level tasks, except when the low-level tasks fail. So, when we try to write a Λ, we aren’t used to thinking consciously about the single letters we write. Thus, we will generally write the Λ with the – (i.e., we will write an A). Some seconds later, the conscious realizes about it. But it’s interesting, because this realization may come from the visual input of us seeing that we miswrote the Λ.