  Classical probability theory is formulated using sets. In this paper, we
extend classical probability theory with propositional computability logic.
Unlike other formalisms, computability logic is built on the notion of
events/games, which is central to probability theory.
  The probability theory based on CoL is therefore useful for {\it automating}
uncertainty reasoning. We describe some basic properties of this new
probability theory. We also discuss a novel isomorphism between the set
operations and computability logic operations.
