Sometimes we notice that we go to a shop to buy a certain thing, and there is something about the manner of the salesman that impels us to decide to visit the same shop the next time we need that kind of article. Even if it is a long way to the shop, we prefer not to go to one which is nearer. Similarly it sometimes happens that a person goes to a hotel or boarding-house or restaurant, and someone treats him in such a way that he decides to return to that place rather than visit another.