S: It would be premature to act to halt the threatened global warming trend,  since that alleged trend might not be real. After all, scientists disagree about it, some predicting over twice as much warming as others
clearly their predictions cannot be based on firm evidence. W: Most scientists consider discussions of accepted ideas boring, and prefer to argue about what is not known. According to the International Science Council, there is a consensus among reputable investigators that average global warming in the next century will be from 1. 5 degree to 4. 5 degree C.
putting disagreements cited by S in perspective by emphasizing similarities