premise: W follows the ( useful ) practice of listing a shortened pronunciation key on each right-hand page ; L 's failure to do so is a disadvantage , notwithstanding the simplicity of their system , for the user must ferret about to find the description given on page xxii to clarify any question and true is true and true is true and true is true and true is true and true is true .
hypothesis: Using L 's work , while their system is generally easy to use , one must turn to page xxii to find a pronunciation guide , while W lists such a guide on every right-hand page .