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Not an answer, and I won’t get a lot of upvotes for saying this, but if your plan for saving the world is for people to change their behavior en masse, you’ve already lost. And we need population-level change in order to have a meaningful impact.
The way we get people off meat is by making the alternatives more (or equally) tasty, convenient, familiar, and affordable. The day we do that, the war is won. There will be some stragglers (of the “beef! murica!” variety) but not many.
We’ve made inroads. Indian food is delicious, way more popular in the West than when I was growing up, and vegetarian-inclined. Vegetarian burgers are more popular and varied than ever. New meat substitutes are being invented all the time. People are interested, but there’s not a well-lit path to vegetarianism for working-class folks just yet.
If you want to eat less meat, do it. But also, find some good meatless recipes and cook them for/with your friends. If they add those to their rotation and pass them along, that’s the kind of thing that can build toward change.
Wasn't there this product (cfc i guess )they put in fridges that caused harm to the ozon layer. And every fridge producer just stopped using it after we found out its really not good? to be fair its not common to happen but it proves its also not impossible that "everyone just..." I think if there's an easy solution, it is poasible.
https://en.wikipedia.org/wiki/Montreal_Protocol
That was done by multiple governments banning CFCs, which is the opposite of "everyone just." The point is t that better things are impossible — a better world is absolutely possible. The point is there has to be real action to make it better, and that action often takes the form of governments stepping in to do the right thing.