If the idea of swarms of delivery drones dropping packages all over our cities started out as a joke, for some reason the punchline hasn’t landed yet. Amazon applied for a patent in 2015 for a command center, like a beehive, plopped into your city, which isn’t a worrying metaphor at all. Google has its own program in the works, which at least for the moment involves delivering burritos. Again, if this is a joke, it’s got a very long fuse.