This is a practice question for my students' speaking test, and we couldn't think of any! Can you think of any truly useless inventions?
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The Pet Rock-- though I suppose that doesn't count, since it was supposed to be useless.
On the other hand, if it make you laugh, or makes you feel loved and comforted--or if you use it for a doorstop, perhaps it isn't useless.
The thing is, humans can find some use for anything.
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I saw an infomercial that was selling 'Wigs for Cats'.
Actaul wigs for actual cats.
Seriously if there was truly a need for that, the world must be ending.
No, I think that is because useless inventions don't stay in the brain for very long until the are shoved to one side as being, well, useless, not worthy of remembering.
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