The word skepticism derives from Greek roots, which alludes to "that doctrine that mistrusts the truth of things"; lexically formed by "skeptesthai" which means "examine" plus the suffix "ism" which refers to "doctrine" or "system". The dictionary of the Spanish language, RAE, presents two meanings for the term, where one of them describes the doubt or disbelief about the truth, validity or effectiveness of something. On the other hand, skepticism is manifested as a doctrine of some ancient and modern philosophers, which is based on affirming that the truth does not exist, and if it exists, the human being does not have the capacity to know it.
That is to say, it refers to an orientation or philosophical position that is inhibited from judging due to the lack of decision with security or certainty about the truth or falsity about the statements or statements about something in particular.
The extreme or radical skepticism can be described as contradictory as the assertion that "we must doubt everything" she opposes the opposing truth claims. A limited or relative skepticism may manifest itself directed to different areas, such as ethics, aesthetics, religion, among others. This philosophical current, according to various sources, was originated by Pyrrho de Elis in the Hellenistic age, but it was from the time of Descartes that a “methodical” skepticism was spoken of.
When speaking of skepticism we can refer to different types, or this current may be immersed in different areas, such as: scientific skepticism, which is the position or belief of those who question the pseudosciences and the claims that pseudosciences and claims have proof sufficient empirical. Ecological skepticism or environmental skepticism, behavior of those who object to the seriousness of the declarations of ecologists and environmental scientists. The philosophical, which is the philosophical current that is based on doubt. and the religious is the position of those who dispute religious authority and doubt the veracity of various religious practices.
