Good Factoring is reliant on loose coupling between subsystems and tight internal cohesion within a subsystem.

First, briefly describe what loose coupling between subsystems refers to. (1 mark each concept up to a maximum of 5 marks)

Second, briefly describe what tight internal cohesion within a subsystem refers to. (1 mark each concept up to a maximum of 5 marks)

Third, briefly provide the reasons why the notions of loose coupling and internal cohesion are useful to us. (1 mark each concept up to a maximum of 10 marks)