"Erwin Schrödinger devised an experiment in which a cat is locked in a closed box with a device that kills the animal when it detects the disintegration of an atom a radioactive substance, for example, a radioactivity detector Geiger, connected to a switch causing the fall of a hammer breaking a bottle of poison - Schrödinger proposed hydrogen cyanide, which can be enclosed in liquid form in a bottle and spray pressure, becoming a deadly gas, once the bottle broke.
If the probabilities indicate that disintegration has an even chance of having occurred after one minute, quantum mechanics states that, as compliance is not made, the atom is simultaneously in two states (intact / disintegrated). But the mechanism devised by Erwin Schrodinger bound state of the cat (dead or alive) to the state of radioactive particles, so the cat would simultaneously in two states (the state death and state living), until the opening of the box (observation) triggers choice between the two states. So, we absolutely can not tell if the cat is dead or not after a minute.
The main difficulty is in the fact that if people are generally willing to accept this situation for a particle, the mind refuses to accept easily a situation that seems too little natural when it comes a more familiar object like a cat. " 1
Similarly, the stealth action, when it occurs, is simultaneously in two states: dead and alive.
If it is never revealed as artistic proposal, it is not "implemented". To quote Nelson Goodman, "the achievement is to produce a work, the implementation is to make it work." Or "to work, the novel must be published in one way or another, the canvas must be displayed publicly or privately, the component shown to an audience. The publication, exhibition, production to an audience are means of implementation - And thus fall within the arts culture. "2
Unimplemented action does not exist as such, ie an artistic proposal.
If however it is revealed, then it ceases a priori, to be stealthy.
1 Wikipedia
2GOODMAN Nelson art in theory and in action , Paris: Gallimard, coll. Folio tests p. 63 et seq
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