January 29. Installed three new smart switches and one ceiling light at J’s place. I imagine how this will look a few decades from now: there’s wiring from before 1960 in which there’s no neutral in the switch boxes (and some smart switches of today can make do without it), then there’s wiring from after 1960, and then all hell broke loose around 2020 when everybody made their home smart and messed with their wiring on their own. How will anyone ever find their way through that? They will be cursing forever.

Also how circuits found their way into language: there’s the line, the load, the traveler and the ground, and so many other words that are rooted in a completely different world than the one they are describing.