  As noted, this sophism sentence is relatively uncomplicated and it is easy to spot the obvious fallacy involved, but Richard's text proceeds with increasingly more difficult and intricate sophism sentences, many of which engage the mind in complex mental acrobatics. The fallacies noted throughout are the standard ones discussed in Aristotle's De Sophisticis Elenchis: the fallacy of equivocation; the fallacy of accident; the fallacy of the composite and divided senses; the fallacy of the consequent; the fallacy of absolute and qualified senses; the fallacy of many causes of truth; amphiboly; improper supposition.