I want to be gentle, but: seriously?

It's literally over a hundred years too late to wonder "what if we're wrong".

The discoverers of atmospheric CO2 acknowledged that it was vitally important to atmospheric heating and debated about the possible impacts.

https://daily.jstor.org/how-19th-century-scientists-predicted-global-warming/

It's quite simply embarrassing in the 21st century to be even contemplating the counterfactuals.

Enough: we know how, when and why it's happening.
We also know that messing with any part of an ecosystem is exceptionally foolhardy.
Let alone that fact that so many our cities are bordering an estuary or the ocean, as Rupert Murdoch chortled about and just *thermal expansion alone* will jeopardise them. I dare to wonder how many groups own cheap inland real estate near to cities?

I wish I could tell my children that we didn't know. But my whole life I have, and had to endure the dragging of feet and counter arguments.

Plan for the worst: rejoice if it doesn't transpire.
We don't need to sacrifice the human world to capitalism.