We think too small. Like the frog at the bottom of the well. He thinks the sky is only as big as the top of the well. If he surfaced, he would have an entirely different view.
Themore adaptability exists for a given kind of decision, the less risky it isto make plans for the future, and therefore the more likely it is that morepeople will make more plans in such areas.
Onecomes to believe whatever one repeats to oneself sufficiently often, whetherthe statement be true or false. It comes to be dominating thought in one'smind.