Exactly what underlies so it user-friendly idea? The answer try a specific very simple and incredibly plausible equiprobability idea, into feeling that in case one has a family out-of collectively exclusive qualities, and if \(P\) and you may \(Q\) is actually people several people in one to friends, then your a beneficial priori likelihood one to things keeps possessions \(P\) is equal to the fresh a beneficial priori chances you to definitely you to point enjoys possessions \(Q\). To possess next since the concept, one can check out the category of second order properties that has had next-order assets to be an excellent rightmaking possessions as well as the next-order property of being an excellent wrongmaking possessions, and then the equiprobability idea concerned entails that the a priori possibilities one a given assets \(P\) contains the 2nd-order property of being a rightmaking home is equal to the latest a priori likelihood you to assets \(P\) comes with the 2nd-buy property of being a wrongmaking possessions. (more…)