Despite scientific uncertainties, the bottom line was this: oil firms recognized that their products added CO2 to the atmosphere, understood that this would lead to warming, and calculated the likely consequences.
Apesar das incertezas científicas, o ponto principal era este: as empresas petrolíferas reconheceram que os seus produtos libertavam CO2 para a atmosfera, compreenderam que isto levaria ao aquecimento, e calcularam as consequências prováveis.