[IANAQCG]<p>As long as quantum computations employ an arrow of time there is no way to escape the before and after semantics of the second law. My gut tells me that the arrow of time and simultaneity are a gestalt. Throwing out the arrow of time takes the baby with it, i.e. what would simultaneity get us without an after and before?<p>Looking at the letter, once the experiment or equations requires initial conditions, there&#x27;s no way to avoid an arrow of time. Change comes <i>later</i>. The arrow of time is a premise of the experimental method.<p>For me, the headline parses out to a dog-bites-man &quot;The Second Law of Thermodynamics&quot; with &quot;quantum&quot; canceling itself out. As Chevy Chase would say, Charles De Gaulle is still dead.