Fake Skeptics do not argue on the grounds of science, they mostly use non-scientific arguments to attack the findings of science. They misrepresent the science, use logical fallacies, acknowledge and interpret empirical data only very selectively, e.g., by cherry picking those, insofar those appear to be in support of their views. The thinking is governed by cognitive biases too a large degree. The driving force is not primarily scientific curiosity, and the motivation for arguing against findings of science is mostly not just some scientific disagreement. Findings from scientific research are rejected, because those findings are in contradiction to preconceived economical, political, ideological, or religious views. Consequently, since the scientific arguments are lacking, fake skeptics often resort to attacks not just against the results from research, but also against the scientists who have presented those results. Scientists who are presenting results from research which are not liked are being defamed and smeared. Accusations, insinuation, or the use of innuendo against those scientists, asserting or suggesting fraud and malicious manipulation of data and results from scientific studies are common. Resort to conspiracy
True Skeptics are, in contrast, driven by scientific curiosity and they wish to acquire knowledge about the cause-effect relationships that govern the workings of the object or system that is being studied and debated. They argue based on science. If they do not agree with findings presented by scientists, they do this using scientific arguments. They embrace the scientific method and test alternative explanations, if they hypothesize those, against empirical data. True skeptics present their alternative hypotheses and theories, once they have been worked out sufficiently, in the peer reviewed specialist journals of the field, i.e., they uphold for themselves high scientific standards. Personal attacks against scientists who are presenting alternative, competing hypotheses and theories are not being considered as legit arguments against those hypotheses and theories. Professional scientists need to be true skeptics in their daily work. It is part of their professional profile.