The bargain theory has largely replaced the benefit-detriment theory in modern contract theory, instance, a deal in which the promisee feels subjectively relieved, but hasn't actually gained any legal rights, might satisfy the bargain theory but not the benefit-detriment theory.
The bargain theory has largely replaced the benefit. Detriment theory in modern contract theory might satisfy the bargain theory but not the benefit-detriment theory. Modern contract theory is instance. Detriment theory in modern contract theory is a deal in which the promisee feels subjectively relieved, but hasn't actually gained any legal rights. Modern contract theory is instance.