The puzzling phenomenon of two individuals being able to reach different conclusions after being exposed to the same facts has been frequently explained (particularly by Daniel Kahneman) by reference to a 'bounded rationality' – in other words, that most judgments are made using fast acting heuristics that work well in every day situations, but are not amenable to decision making about complex subjects such as climate change. Anchoring has been particularly identified as relevant in climate change controversies as individuals are found to be more positively inclined to believe in climate change if the outside temperature is higher, if they have been primed to think about heat, and if they are primed with higher temperatures when thinking about the future temperature increases from climate change.