First of all i must say i love dr. House. That's why i would like to ask about complexity of diagnosing. Let's start with an example. We have a patient with three possible diagnoses. The problem is we already did all available examinations. The thing you now have to do is proceed with a treatment. You have to use the medicament which wouldn't kill patient and which will cause a reaction (for example rash). From the reaction we would deduce the final diagnose and use proper treatment. So will this be possible? + Also would we be able to manually discard a symptom? Because sometimes would the symptom be just a side effect of an old bad treatment which will discard right diagnose for us. That's all. :)