Question

when does any material flow? and what happens exactly when it flow?

Answer 1

The probability that a quantum of material flows along the highly frequented routes is higher compared to a network where all routes transfer the same amount of material. Conversely, the probability that a quantum of material flows along the less frequented routes will be lower compared to a network where all routes transfer the same amount of material. Such a change in probability can be quantified with the help of information theory. Information is defined as the agent which causes a change in probability. Ulanowicz uses the term information to describe “the effects of that which imparts order and pattern to the system.”