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Second , he says , the reason people encounter misfortune is not due to their visible form , but to an incompleteness of their hearing and seeing . Allocation rules , rules for fair distribution of rewards / resources ; for example , the issue of being heard and saying more than others . Expert testimony which only purports to show that there may be marginally more accurate tests than that mandated by the applicable statutes and regulations is not properly admissible in this kind of administrative hearing either to prevent the admission of the test results at all , or to challenge the weight to be given them . A follow up discussion ten years later disclosed that she felt the use of 2CD had increased the acuity of her hearing and that now ten years later there was no diminishing in that effect . A study of auditory and visual speech reception , the assessment and training of residual hearing and visual reception by individuals with hearing loss , and the integration of these skills into the rehabilitation process .