Georg Simmel pictured society as a web of interactions between people. Georg Simmel argued that the powerful could not exercise their power without the complicity of their subordinates, and power is an interaction. Meredith Davis has argued that interaction is not the special province of computers alone. Meredith Davis points out that printed books invite interaction and that designers consider how readers will interact with books. Objects offer the possibility for interaction, and design activities can be viewed as design for interaction.
Social Interaction refers to a relationship between two or more individuals. Social interactions are the basic object of analysis for social scientists and inquiries into the nature of social interactions are to be found in the work of the classical sociologists, as in Max Weber's theory of social action. Environmental sociology is defined as the sociological study of societal-environmental interactions.
We also have ProteinDNA interactions where a protein binds a molecule of DNA, often
to regulate the biological function of DNA.