Bateson on "the concept 'switch'"
"the switch, considered as a part of an electric circuit, does not exist when it is in the on position. From the point of view of the circuit, it is not different from the conducting wire which leads to it and the wire which leads away from it. It is merely 'more conductor.' Conversely, but similarly, when the switch is off, it does not exist from the point of view of the circuit. It is nothing, a gap between two conductors which themselves exist only as conductors when the switch is no,"
"the concept 'switch' has thus a special notion to time. It is related to the notion 'change' rather than the notion 'object.'"