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48.The following appeared in a newspaper article published in the country
of Corpora.
"Twenty years ago, one half of all citizens in Corpora met the standards
for adequate physical fitness as then defined by the national advisory
board on physical fitness. Today, the board says that only one quarter of
all citizens are adequately fit and suggests that spending too much time
using computers may be the reason. But since overall fitness levels are
highest in regions of Corpora where levels of computer ownership are also
highest, it is clear that using computers has not made citizens less
physically fit. Instead, as shown by this year's unusually low
expenditures on fitness-related products and services, the recent decline in the economy is most likely the cause, and fitness levels will improve when the economy does."
Facing the serious health condition in Corpora, the author firstly ruled out the long time computer use as the cause, and further predicted that when the economy increase people would purchase more fitness-related products and services, which would finally contribute to the improvement of people’s fitness levels. Though somewhat reasonable at the first glance, the argument suffers from several logical problems as below.
In ruling out the long time use of computer as the cause, the arguer actually confused the long time use of computer with the high computer ownership. High computer ownership does not necessarily mean long time computer use. Maybe, in the highest computer ownership area, most people use computer often but not long, while, in the lower computer ownership areas, most computer owners do jobs related with computer, such as stocking, programming, and they have to use computer for long time. Without ruling out this possibility the author cannot simply excluded the long computer use as the main cause for low fitness. If the author further analyses the computer use time with the fitness condition, the reasoning would be more convincing.
From the argument, we could easily see that the author attribute good fitness condition to the use of fitness-related products and services. However, it is absolutely not the case. Though the fitness-related products could more or less contribute to good fitness, but it will never be the main reason. As we all know people’s fitness levels on a large degree result from people’s habits, whether they exercise a lot, whether they sleep enough, whether their eating habits are healthy, whether they always keep good emotions. People who spend little on fitness-related products or services but keep healthy habits would undoubtedly enjoy better fitness than one who emphasis too much on fitness-related products but ignore those good healthy living habits. Therefore, the arguer’s assertion is on a certain degree misleading.
Moreover, no sound evidences proved that it was the economy decline that led to the unusually low expenditures on fitness-related products and services. If as the author assumes the fitness-related products have significantly contribute to one’s good fitness, even if the economy decline it would not drive people sacrifice their fitness, that is even if the expenditure on fitness-related products and services dropped cause people were less affordable, at least it would not drop to the “ unusually low “ situation. So, the unusually low expenditure on fitness-related products and services has actually strengthened the possibility that people recognized that the fitness-related products and services was not that effective, and finally spent less on those. If this is the case, the arguer is actually reasoning against the fact.
In a word, the arguer’s assertion is invalid and it may induce people invest too much on fitness-related products and services but overlook the most important-keeping healthy habits.
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