Okay, let me just say that there's going to be open spoilers about a 70-year-old SF story and a 100+-year-old poem. So, if you have not read There Will Come Soft Rains by Ray Bradbury and you don't want to be spoiled on the ending, then this is your notice to back out now. Right, so if you're familiar with the story, then you'll know it's about a world where automated machines go on serving their long-dead human masters. TIL where Bradbury got the title from. In 1918, a German poet published an anti-war poem with that title. It basically describes the world in Bradbury's story. Absolutely where he got his inspiration from.