I was bothered last evening by the lingering memory of intercepting a note passed between high school classmates 35 years ago.

Then it dawned on me that I used to work in the sewer rehabilitation industry where we were Number 1 and Number 2 in our business.

You needn’t understand what I’m joking about here — it’s just a personal thought recorded for posterity, remembering all the brown trouts I used to love to study to know the pipe shape/profile and speed of sewage in order to calculate the volume of material flowing through a sewer system, estimating any I&I and other aspects of what a municipality must anticipate when planning and maintaining a sewer treatment plant.