A method for inferring a probability of a first inference. The inference is related to identification of a cause of an outcome in a healthcare setting. A fact, related to the query, is related to the healthcare setting. The fact further relates to a network of interactions associated with the outcome. Each datum of the database conforms to the dimensions of the database. Each datum of the plurality of data has associated metadata and an associated key. The associated metadata includes data regarding cohorts associated with the corresponding datum, data regarding hierarchies associated with the corresponding datum, data regarding a corresponding source of the datum, and data regarding probabilities associated with integrity, reliability, and importance of each associated datum. The query establishes a frame of reference for the search. The database returns a probability of the correctness of the first inference based on the query and on the data.