Many corporations have begun decorating their halls with motivational posters in hopes of boosting their employees' motivation to work productively. However, almost all employees at these corporations are already motivated to work productively. So these corporations' use of motivational posters is unlikely to achieve its intended purpose. The reasoning in the argument is most vulnerable to criticism on the grounds that the argument ['fails to consider that even if motivational posters do not have one particular beneficial effect for corporations, they may have similar effects that are equally beneficial', "does not adequately address the possibility that employee productivity is strongly affected by factors other than employees' motivation to work productively", "fails to consider whether corporations that do not currently use motivational posters would increase their employees' motivation to work productively if they began using the posters", 'fails to consider that even if employees are already motivated to work productively, motivational posters may increase that motivation']