An agent often does not have precise Probabilities or Utilities to guide resolution of a decision problem.
Assuming that computation of an option\'s e.
Then I support a decision principle that allows any act that maximizes expected utility according to some pair of assignments in the set.
To begin, I represent the doxastic and conative state of an agent with a set of pairs of a probability assignment and a utility assignment.
I advance a principle of rationality for making decisions in such cases.
An agent often does not have precise Probabilities or Utilities to guide resolution of a decision problem