Something that claims to be a legitimate science, but does not adhere to the strict guidelines of the scientific method as first developed by Galileo. That is, observation, experimentation, empirical evidence, and using that criteria to either support or disprove a theory. There are tricks to getting around even that, however. Cherry-picking the evidence to support a particular conclusion, for example, which global warming “scientists” are too often guilty of.
I knew he’d get to “deniers of climate change.”