I was thinking about how I'm "left-eyed" and that made me realize it's odd that we aren't more bilaterally symmetrical. I mean, we are for the most part, but not our organs.
Or- we could less symmetrical. I guess it's convenient to look roughly the same in a mirror, but still a little weird.
I was just trying to figure out what was so creepy about this ad introducing the Amazon Echo. Then I realized it's kind of eerily similar to the first few pages of Marshall Brain's story Manna, a weirdly plausible slope to technological dystopia and then a hopeful twist to post-scarcity utopia.