Many people go beyond the meaning of the term "social system" and apply it to all systems of life. This is an erroneous usage; given that the systems of life are better expressed as the "systems of society" because that is what they are; they organise the relationships that arise between the people living in a particular society, regardless of whether they meet or not. It is not the meeting of people but the relationships ('alaqaat) which should be taken into consideration. Consequently, these relationships will be diverse and different. They would include economics, ruling, politics, education, penal code ('uqubaat), societal transactions (mu'amalaat) and the rules of (testimonial) evidences (bayyinaat) etc..