I like the chart on page seven. First some IPCC 101: Intro to UN speak.
Unlike the Scientific Method I learned in 9th grade biology whose first three steps are Observation, Description, Prediction; the IPCC discards prediction and uses Storylines. The six Storylines are described on page eight of the SPM.
As an aside, I rather like predictions and not just in the markets. Mendeleev with his eka-aluminum, eka-boron and eka-silicon: predicting the physical properties of elements not yet discovered, and leaving room for them in his table, so they'd have a place to reside when they were found, just bowls me over. Other folks have been impressed too:
When I first saw the Periodic Table, it hit me with the force of
Oliver Sacks, neurologist and writer in The New Yorker, December 20, 1999.