Not all kinds of uncertainty need to be understood. The future just is uncertain, and we make predictions based on existing scientific or humane knowledge. We could call that empirical uncertainty. However, uncertainty relating to moral, religious and aesthetic questions is different. One kind of uncertainty these questions exhibit is philosophical – ‘What is the purpose of human life?’ is essentially debatable. The framework for understanding philosophical uncertainty involves the methods of philosophy – analysis, argument and interpretation.
Best wishes, Andy Hamilton