The IPCC report predictions were not wrong. Instead, the “uncertainty” comes from humanity.
The predictions were for what will happen depending on the choices we make. Prior to the Paris Agreement in 2015, the world was heading towards a future that was between four to five degrees Celsius warmer than today. You might say, well, that does not sound that bad, it‘s four or five degrees warmer. But think of it in terms of the human body. The temperature of the planet has been as stable as that of the human body over the course of human civilization. If our body is running a fever of one or two degrees Celsius, or four to six degrees Celsius, that is life-threatening.
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