Yea sure, I hope people try this approach if they believe the math. I'm just skeptical that a circular economy is realistically better than other means. There are many examples of "built to last" products having average use lifespans below the energy payback period (ie net loss).
But something about moving mass consumption manufacturing to net negative carbon without touching the content seems off to me. Medium is the message. I can’t imagine carbon negative high-tech renewables based factories delivering through EV supply chains...the same crap as today.
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It's likely that "touching the content" would likely be things like reducing raw material mass, more heat recycling, etc. - more traditional things that we already know that work. Less so things like moving from ABS to PLA - which has big performance / cost sacrifices.
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I think you may be mixing up my current dabbling in maker stuff with my opinions on sustainability :D There's a coupling (I'm doing it partly to learn the possibilities/limits of last-mile tech) but most of the serious interventions I'm thinking about aren't consumer-level
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