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In sum, the argument is unconvincing as it stands. To strengthen it, the argument's
proponent must provide dear evidence that hospitals prefer Cold-Away because of its
effectiveness in treating colds. To better assess the argument, I would need better evidence
comparing the effectiveness of the two products--perhaps through clinical studies or reliable
surveys of the general population.
Argument 55
A folk remedy* for insomnia, the scent in lavender flowers, has now been proved effective. In a
recent study, 30 volunteers with chronic insomnia slept each night for three weeks on
lavender-scented pillows in a controlled room where their sleep was monitored. During the first
week, volunteers continued to take their usual sleeping medication. They slept soundly but
wakened feeling tired. During the second week, the volunteers discontinued their medication.
As a result, they slept less soundly than the previous week and felt even more tired. During the
third week, the volunteers slept longer and more soundly than in the previous two weeks. This
shows that over a short period of time lavender cures insomnia.
*A folk remedy is usually a plant-based form of treatment common to traditional forms of
medicine, ones that developed before the advent of modern medical services and technology.
The speaker concludes that the scent of lavender provides an effective short-term cure for
insomnia. To support this conclusion the speaker cites a three-week experiment in which
researchers monitored the apparent effects of lavender on 30 insomniacs, who slept on
lavender-scented pillows each night of the experiment. The speaker's account of the
201
experiment reveals several critical problems with it. Together, these problems serve to
undermine the speaker's argument.
A threshold problem involves the definition of insomnia. The speaker fails to define this
critical term. Ifinsomnia is defined as an inability to fall asleep, then how soundly or long a
person sleeps, or how fired a person feels after sleep, is irrelevant to whether the person
suffers from insomnia. In short, without a dear definition of insomnia it is impossible to assess
the strength of the argument.
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