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Continue to ChatWe need social tipping points, where the average person thinks it's not okay to build a smokestack or a tailpipe, or to use the sky as a dumping ground, it's only when the average person changes their thinking that things will change. - Ken Caldeira from https://whatsmyquote.com/quote/we-need-social-tipping-points-where-the-average-person-thinks-it-s-not-okay-to-build-a-smokestack-or-a