Amazon’s Echo Dot is on its fourth generation. And within each of those generations there are myriad iterations and variations on the basic design. And that’s just the Dot. In all, there are dozens of different “Echo” devices. And each one is either a newly-introduced product or an iteration of a previous generation. And there will be more next year and more the year after that. That’s what the status quo looks like in smart gadgets. If you got a smart TV for your birthday last year, you can probably get a new version of the same TV on your…
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