Zero-sum thinking originates from zero-sum games in game theory and refers to the belief that resources are fixed in total amount, so one party's gain necessarily comes at another's loss. In such cases, the gains and losses among all participants sum to zero. It emphasizes competition and confrontation, viewing success as being built upon others' failure. Non-zero-sum thinking, on the other hand, holds that resources are not fixed—through cooperation and innovation, mutual or multiple gains can be achieved, meaning the sum of gains and losses is not zero (it can be positive or negative). It focuses on collectively expanding the "pie," rather than merely fighting over existing slices.