1. A method for determining a corrective action for a diagnosable system, the method comprising: receiving a first evidence notification; determining a plurality of evidentiary-failure-mode-probability rectangles (EFMPRs) based on the first evidence notification, wherein each EFMPR comprises a failure-mode probability range and an evidence probability range; determining a first candidate EFMPR in the plurality of EFMPRs; determining an overlap area between the first candidate EFMPR and the other EFMPRs in the first plurality of EFMPRs; determining the overlap area of the first candidate EFMPR is less than an overlap threshold; and responsive to determining that the overlap area of the first candidate EFMPR is less than the overlap threshold, determining a reasoned corrective action for the diagnosable system, based on the first candidate EFMPR.