"Don't give up on the future of humanity", Reivew on Tomorrowland

I absolutely love this movie, and most importantly, the hope it expresses. Maybe everyone knows that the earth's resources are insufficient, but those of us who do some scientific research know better how serious the crisis of human existence is. From ore smelting, energy consumption, service to final recycling, not to mention environmental pollution, in another century, about 10% (by type) of commonly used mineral resources will be exhausted (a considerable part cannot be recycled), and then human beings face huge social problem. 90% of the electricity comes from nuclear energy, steel, plastics, cement, non-ferrous alloys, medicines are lacking, prices are extremely high, and the social class is completely fixed.
So "don't give up on the future" is really inspiring. I don't want to give up, and I don't want my descendants to live in dire straits.
But where is the road, I can't see it.
If you want a dreamer, you also need a doer. Where is the doer?
I really want to see someone come forward and say, start with me. However, even I can't do it myself.

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