It is like when we look || looking || As when we look into the driver's cabin of a locomotive: we see handles that || which all look more or less alike. (That is understandable || That's natural, since they are all supposed || made to be grasped || held with the hand.) One || But one is the crank that can be moved continuously over (it regulates the opening of an air valve) || valve that can be regulated by continuous degrees; the other || another is the handle of a switch, which has only two positions in which it is effective || effective positions, it's either shut or open; a third is the handle of a brake lever, the more strongly || harder you pull it the more strongly the brake is applied; a fourth, the handle of a pump, works only as long as it is
8
¤ moved back and forth.