new features tend to offer alternativesbut do not fully subsume what came before no it isn' to quote from python namesake monty python' flying circusan argument is connected series of statements intended to establish proposition no it isn' yes it isit' not just contradiction lookif argue with youi must take up contrary position yesbut that' not just saying "no it isn' yes it isno it isn'tyes it isno it isn' argument is an intellectual process contradiction is just the automatic gainsaying of any statement the other person makes (short pauseno it isn' it is not at all now look managed attributes