 Abductive reasoning also called Abduction I. Abductive inference I or Retroduction II is a form of logical inference which starts with an observation or set of observations then seeks to find the simplest and most likely explanation. This process, unlike deductive reasoning, yields a plausible conclusion but does not positively verify it. Abductive conclusions are thus qualified as having a remnant of uncertainty or doubt, which is expressed in retreat terms such as best available or most likely. One can understand Abductive reasoning as inference to the best explanation III although not all uses of the terms Abduction and inference to the best explanation are exactly equivalent.For five, in the 1990s, as computing power grew, the fields of law 6 computed science and artificial intelligence research 7 spurred renewed interest in the subject of Abduction.8 diagnostic expert systems frequently employ Abduction.