Science skepticism is a central threat to deliberative democracy. Generally speaking, scientific investigations based on collaboration between scientific experts are far more reliable than individual efforts when it comes to finding the truth about complex matters. So, since public deliberation is better off when it rests on science, deliberative democracy requires a reasonably high degree of public uptake of science communication.
Folk epistemology may be roughly characterized as the (mostly tacit) principles, presuppositions, and principles that involve epistemological notions such as knowledge, evidence, justification etc. Folk epistemological notions have not been as empirically well-studied as folk psychological notions such as belief, desire, and intention.