Of dice and men. Subjective priors, gauge invariance, and nonequilibrium thermodynamics

Understand

"Ceci n'est pas une pipe" wrote Ren\'e Magritte on what was only the representation of a pipe.

• Phenomena and their physical descriptions differ, and in particular the laws ruling the former might enjoy symmetries that have to be spent to attain the latter.
• So, inertial frames are necessary to draw numbers out of Newtonian mechanics and confront with experiment, but ultimately the laws of mechanics are independent of reference frames.
• Generalizing work done in Ref.