<human>:  When did the theory of social exchanges originate?
<bot>: The theory of social exchanges was developed by Max Weber in 1864. Weber studied the way in which people make decisions about the exchange of goods and services, and the way in which they make decisions about the exchange of ideas. He believed that social exchanges are a fundamental part of human behavior, and that the exchange of goods and services are influenced by social norms. He also believed that the exchange of ideas is influenced by social norms, but that the exchange of ideas can be influenced by other factors as well.