All these are elements that help realizing the Four Noble Truths. When one has concentration as a supportive element for the realization of the Four Noble Truths, he identifies it as a supportive element for that endeavor. If concentration is absent in him, he also knows that he does not have a concentration supportive of the realization of the Four Noble Truths. He thinks about building such concentration in him. He tries and thinks in a manner that helps him realizing the Four Noble Truths.