Comment Re:Amazon (Score 1) 186
https://ancillary-proxy.atarimworker.io?url=https%3A%2F%2Fwww.amazon.com%2Fgp%2Fprod... is listening 24x7, otherwise how could it hear you say "Alexa"?
We warn the reader in advance that the proof presented here depends on a clever but highly unmotivated trick. -- Howard Anton, "Elementary Linear Algebra"