Free banking and spectral lines

 Kurt Schuler uses it in a jazz musical metaphor on Free Banking.

The Bank of England was the piano player, who had a major role but did not conduct the session. The piano player was sometimes off key, making the music sound discordant.

We see spectral lines when we shine bright white light at crystals and molecules. Quantization of electrons among discrete energy bands, a queueing problem. As if all other electrons had a prior agreement on step size to avoid shortages in energy flow during excitation.

In the same way, the Bank of England is restricted to a set i, as in -iLog(i). During a musical change (shock), the skew in the ensemble results as the band searches the sonorous chord. They have to march to the new chord, minimizing steps.