Humans

Synths — humanoid domestic and industrial servants, sold in shops, present in most households.

Less each season. Synths do the cleaning, the caring, the factory shifts and eventually the surgery. A teenager gives up studying medicine because a machine will always be better at it, and the show's honest move is that her mother has no answer.

Obsolescence — The work goes, and standing goes with it.

The most domestic treatment in the catalogue. Not a war, not a singularity — a family arguing about whether the daughter should bother with A-levels.