<Tr> <Td> Relation to processes (show) <Ul> <Li> Difference (discrete analogue) </Li> </Ul> <Ul> <Li> Stochastic </Li> <Li> Delay </Li> </Ul> </Td> </Tr> <Ul> <Li> Difference (discrete analogue) </Li> </Ul> <Li> Difference (discrete analogue) </Li> <Ul> <Li> Stochastic </Li> <Li> Delay </Li> </Ul>

What are the limitations of the method of separation