What's the solid evidence any of it will happen? What kinds of solid evidence will you accept? Should we wait until all corals have bleached and withered away?

What's the solid evidence any of it will happen? What kinds of solid evidence will you accept? Should we wait until all corals have bleached and withered away? Should we wait until all of Greenland is arable? How many years of drought should California endure until you might start accepting that maybe something has been changing for the worse? Or should we rather ignore you and focus instead on things we can change?