It is true this is the most rapid climate change known, or appears to be heading that way, but there have been very rapid changes in the past too. There are also minor fluctuations recorded, like the Little Ice Age in medieval Europe. The climate change that marked the end of the reign of the dinosaurs 65 million years ago was rapid.

Mankind can adapt to a changing climate. Before modern times man inhabited the edges of glacial ice sheets (probably contributing to our evolution as modern man), parched deserts, tropical rain forests, high altitude plains....one of the traits that make us human and a very survivable species is our adaptability.

No wonder Jonathan Swift was almost burned at the stake for writing "A Modest Proposal"; it seems people cannot appreciate the satirical, the metaphorical, the tongue in cheek. Oh well. The world was created 6433 years ago in six days by a supernatural being named Ywh.