Zen Group of Western Australia Zen Group of Western Australia The Zen Group of Western Australia (ZGWA) is an organization of lay zen practitioners located in Perth, Western Australia. The ZGWA is formally affiliated with the Diamond Sangha tradition of Zen Buddhism, which was founded in Hawaii in 1959 by Robert Aitken Roshi. In keeping with Diamond Sangha tradition, the ZGWA uses rituals from both the Soto and Rinzai schools. Mediation practices of Shikantaza from the Sōtō school and koan training from the Rinzai school are typical forms of practise employed by students in the group, under the guidance of the groups roshi. ZGWA's senior
Abductive reasoning premise, but the truth of the conclusion is not guaranteed. (Indeed, it turns out that some swans are black.) Abductive reasoning allows inferring formula_2 as an explanation of formula_1. As a result of this inference, abduction allows the precondition formula_2 to be abduced from the consequence formula_1. Deductive reasoning and abductive reasoning thus differ in the direction in which a rule like "formula_2 entails formula_1" is used for inference. As such, abduction is formally equivalent to the logical fallacy of affirming the consequent (or "Post hoc ergo propter hoc") because of multiple possible explanations for formula_1. For example, in a