Final answer:
Culture is not a principle of dialectical thinking, which focuses on change, contradiction, and holism.
Step-by-step explanation:
The principle of dialectical thinking that is not included is Culture. Dialectical thinking, a concept often associated with the work of philosophers like Hegel and Marx, involves the understanding that change occurs through a dialogue between opposing forces and ideas, which reconciles contradictory elements to arrive at a higher-level synthesis. The main principles of dialectical thinking are Change, which recognizes that everything is in a constant state of flux; Contradiction, which identifies the conflict between opposing sides as a driver of change; and Holism, which emphasizes the interconnectedness of all parts of a system or whole.