The scientific Enlightenment marked the spreading of a tradition of criticism. This movement started with a rejection of authority: [[People (and the explanations they make) are fallible]] and [[Knowledge isn't justified]]. It also recognized that [[Knowledge isn't derived from experience]], [[Theories are conjectured]]. Theories once conjectured are then criticized and tested by experience (experiments or observations). The traditional also importantly realized, at least implicitly, that [[Knowledge consists of good explanations]]. "An entire political, moral, economic and intellectual culture – roughly what is now called ‘the West’ – grew around the values entailed by the quest for good explanations, such as tolerance of dissent, openness to change, distrust of dogmatism and authority, and the aspiration to progress both by individuals and for the culture as a whole." - [[David Deutsch]] See also: [[All evils are due to a lack of knowledge]]