 In 50 BC, the censor Appius Claudius Pulcher, regarded as an authority on the procedures of the augural college, expelled Ateius from the senate on the grounds that he had falsified the "auspicia".In the popular view, the disaster at Carrhae was caused by Crassus's ignoring the omens.Cicero, who was himself an augur and thus trained in assessing divine signs, presents a more complex perspective in his book "De divinatione".