According to Jean Piaget,
	“Epistemology itself can be science when it is concerned with research into mechanisms of scientific knowledge”.
	In a wider sense the term Epistemology is often used instead of cognition theory, or theory of knowledge.
	In one of his most famous experiments, Piaget explored the role played by the child’s reasoning process in their cognitive development. We will here mention a typical Piaget dialogue with Julia, a small girl: