A few things are
unequivocal, perhaps (doubling from the
present concentration of CO2 will take 140 years [give or take]; the idea that the changes in climate since 1880 have been in the aggregate beneficial; it takes more energy
to vaporize a kg of water than
to raise its temperature by 1K; ignoring the energy cost of water and latent heat transport [in the hydrologic cycle] leads
to equilibrium calculations overestimating the climate sensitivity), but most are propositions that I think need more research, but can't be refuted on
present evidence.
Suppose an individual believes something with his whole heart; suppose further that he has a commitment
to this belief, that he has taken irrevocable actions because of it; finally, suppose that he is
presented with
evidence,
unequivocal and undeniable
evidence, that his belief is wrong: what will happen?