Final answer:
Most postformal thought theories emphasize the ability to tolerate ambiguity, embracing the idea that complex problems can have multiple truths and interpretations.
Step-by-step explanation:
The common emphasis of most postformal thought theories is the ability to tolerate ambiguity. These theories suggest that thinking in postformal stages involves recognizing that truth can be complex and that some problems have no clear solutions. Instead of seeking a single right answer, postformal thinkers understand that perspectives can vary and that multiple truths can exist simultaneously.
This concept is found within the challenges faced by readers of complex texts, where they are encouraged to embrace multiple interpretations and to understand that a single definitive conclusion is not always available. The same principle applies when considering social beliefs and ideas, which may encompass various belief systems and time periods, often without critical reflection on their consistencies or origins.