We’ve all experienced some version of this effect when going on vacation in a new place. As tourists, we know all too well that we have only a week or however long at our destination—so we plan ahead to make sure we pack in as many landmarks, tours, activities, and other experiences unique to the place we’re visiting as we can. If we’re visiting friends, we make sure to spend plenty of time with those folks, and we try to savor every moment. In other words, we make a full and conscious effort to treat our time as the scarce resource that it is.