The article mentions the fatal flaw with the particle technique, but may I request your source that leads you to believe that we have "perfected" deploying particles in our atmosphere on a global scale?
Also, please don't give Elon any ideas, he already has enough futile showboats.
It utterly fails to mention the fatal flaw of both schemes. Neither addresses the problem, which then carries on until the ocean ecosystem, thence civilization, collapses.
It will keep the planet habitable and buy us time to solve the fundamental problems. We don’t have the technology or global political will to reverse or even slow global warming. We’re not even close. We need more time.
Ignoring this reality will just guarantee our collapse. Geoengineering gives us a plausible way out.
The alternative is people continuing to clamor for global cooperation, a comically naive goal that has gained near to zero traction in 40 years.
Renewables are radically cheaper than any other source of power, ever. Scrapping the old stuff and building out renewables is cheaper than keeping any of it.
We don't need to achieve "global cooperation". We just need to each act in our own self interest, as quickly as we can. It is the only strategy that can work. It still might not work. But directing resources elsewhere makes it happen slower. Too slow is the same as failure.
Also, please don't give Elon any ideas, he already has enough futile showboats.