− | [http://en.wikipedia.org/wiki/Schr%C3%B6dinger Schrödinger] proposed that an object, when not clearly visible, could be both present and absent simultaneously, hence the "wearing them or not" reference. | + | *[http://en.wikipedia.org/wiki/Schr%C3%B6dinger Schrödinger] proposed that an object, when not clearly visible, could be both present and absent simultaneously, hence the "wearing them or not" reference. |