Paraphrasing using themes common with the way the mind works. Our conscious mind is logical, fast, but quite limited. It feeds/trains the more powerful subconscious mind with what it decides is relevant to learn. This filter is called the Critical Factor. The subconscious somewhat analogous to a huge database of automatic movements. For example, your conscious mind made the logical choice that learning all the movements to ride a bike is beneficial. The Critical Factor (the threshold that determines if an activity is worth learning) was bypassed, and the subconscious mind accepted that and developed neural pathways to make the movements automatic.