What makes you think nobody thought of this before? | Hacker News

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		avip on Aug 17, 2017 \| parent \| context \| favorite \| on: Concrete-free washing machines are lighter to tran... What makes you think nobody thought of this before?

ratherbefuddled on Aug 17, 2017 [–]

To my knowledge nobody did it, and I can't see a reason why having had the idea it wouldn't be used.

rasz on Aug 17, 2017 | [–]

There are patents for this from 1989.

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