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Continue to ChatOne of the ideas that was developed at MIT in a workshop was, imagine this pipe, and you've got valves, solenoid valves, taps, opening and closing. You create like a water curtain with pixels made of water. If those pixels fall, you can write on it: you can show patterns, images, text. - Carlo Ratti from https://whatsmyquote.com/quote/one-of-the-ideas-that-was-developed-at-mit-in-a-workshop-was-imagine-this-pipe-and-you-ve-got-valves-solenoid