Jacques Lacan, S17: The Other Side of Psychoanalysis, page 49-50:
When the signifier is introduced as an apparatus of jouissance, we should thus not be surprised to see something related to entropy appear, since entropy is defined precisely once one has started to lay this apparatus of signifiers over the physical world.
Don’t think I’m joking. Whenever you construct a factory somewhere, naturally you draw energy, you can even accumulate it. When, the apparatuses that have been installed so that these sorts of turbines function to the point where you can put energy in a bottle are built according to this same logic I am speaking about, namely the function of the signifier.
In fact, it is only through this effect of entropy, through this wasting, that jouissance acquires a status and shows itself. This is why I initially introduced it by the term “Mehrlust,” surplus jouissance. It is precisely through being perceived in the dimension of loss -something necessitates compensation, if I can put it like this, for what is initially a negative number- that this something that has come and struck, resonated on the walls of the bell, has created jouissance, jouissance that is to be repeated. Only the dimension of entropy gives body to the fact that there is surplus jouissance there to be recovered.
First attested in 1868. From German Entropie, coined in 1865 by Rudolph Clausius, from Ancient Greek ἐντροπία (entropia, “a turning towards”), from ἐν (en, “in”) + τροπή (tropē, “a turning”). (https://en.wiktionary.org/wiki/entropy)
Although the concept of entropy was originally a thermodynamic construct, it has been adapted in other fields of study, including information theory, psychodynamics, economics, and evolution. (https://en.wikipedia.org/wiki/Entropy_%28disambiguation%29)
It’s dangerous to go alone! Take this. (http://www.youtube.com/watch?feature=player_detailpage&v=JkquxtcNfnM&t=30)