Entropy is a measure of disorder or randomness in a system.

On the path of knowledge, entropy is relevant to understanding:

• The nature of knowledge as low-entropy structure in memory

• The tendency of systems toward disorder

• The difference between meaningful patterns and random noise

• The concepts of information and knowledge

Knowledge is defined as a low-entropy structure in memory, meaning it is organized, meaningful, and non-random.

See also randomness, pattern.