标题: can anyone help me here? [打印本页] 作者: licheng 时间: 2002-8-25 05:16 标题: can anyone help me here?
The organizers of tomorrow's outdoor concert announced that it will go on to orrow on schedule unless bad weather is forcast or too few advance tickets are sold. If concert is canceled, refunds will make to ticket holders. Since some ticket holders have already been issued refunds even though more than enough advance tickets were sold, it must be the case that bad weather is forecast.
Which of the following is an error of reasoning?
a) It proceeds as if a condition whchi by itself enough to guarantee a certain result, is the only condition under which that result would occur.
b) It basese a conclusion that is known to require two conditions on evidentce that bears on only one of those conditions.
c) it explains on e event as being caused by anouther event, even though both events must actually have been caused by some third unidentified event.
d) It treats evidence for the absence of one condition under which a circumstance would ovvur as conclusive eveidence that that circumstaance will not occur.
e) Evidence given to support the conclusion undermines it.
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anser is A...
i can't understand why...
Thanks a lot!作者: primefang 时间: 2002-8-25 10:25
原文的逻辑关系
Cancelled -----〉à bad weather or few tickets sold
Cancelled-----〉 à refund
