A Psalm for the Wild-Built - Becky Chambers

Centuries before, robots of Panga gained self-awareness, laid down their tools, wandered, en masse into the wilderness, never to be seen again. They faded into myth and urban legend.

Now the life of the tea monk who tells this story is upended by the arrival of a robot, there to honor the old promise of checking in. The robot cannot go back until the question of "what do people need?" is answered. But the answer to that question depends on who you ask, and how. They will need to ask it a * lot.* Chambers' series asks: in a world where people have what they want, does having more matter?