Accepted claims are not regarded as valid beyond all possible doubt however, since future discoveries may dictate a reevaluation. This philosophy is an essential part of objective scientific inquiry or any other search for an extremely reliable level of knowledge. Virtually all progress has been guided by those willing to question, to reevaluate and to continuously seek more valid answers. The skeptical philosophy is not limited to scientific disciplines, per se. It's a methodology for acquiring knowledge.
Rational skepticism tends to produce highly reliable results.
Credulity, on the other hand, produces dogmatic-type decisions and opinions, unreliable results, and is potentially very dangerous. Skepticism cannot endanger real truth. If a contention is valid, even the most demanding questioning should only produce additional confirmation. If it's wrong, we gain an opportunity to discover the correct answer. There are a number of misconceptions about skeptics.