I was thinking about this recently—given how difficult it is to explain "why" an artificial neural network behaves a certain way, it's probably similarly difficult for our conscious minds to explain our unconscious behavior, the best they can do is pattern match and tell stories.
From the article: "If we could understand the processes by which billions of neurons cooperate to help us recognize a face or interpret a fragment of speech, we would find these as unrelated to the stream of consciousness as the operation of the liver."