It is during post-mortem analysis of bridge deals that this tool will help most. It allows assessing probabilities from the most basic to the highly complicated. It digests contextual information from bidding and card play and runs a statistical evaluation to approximate probabilities by analysing a large number of randomly assembled deals.

It thus helps building the experience necessary for good decision making at the bridge table, meaning picking a path through a wealth of possible bidding and playing strategies. The best choices use hard facts as well as inferences and judgements based on card distribution probabilities. Simple probabilities are easy to calculate. More complex questions, when considered in the context of prior information and inferences - particularly so as bidding and play evolves - are fiendishly difficult to derive analytically; a statistical estimate is the easiest way forward.