I think you're missing the point. It's (IPCC) goal is to provide governments with scientific assessment as well as the impact. This would include climate specia

I think you're missing the point. It's (IPCC) goal is to provide governments with scientific assessment as well as the impact. This would include climate specialists, sustainability specialists, modellers, politicians, economists and many more. Your question feels like it's deliberately trying to cast the effort in a bad light but maybe that's just how I read your question so hopefully my comment helps clear up any confusion.