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The following was excerpted from the speech of a spokesperson for Synthetic Farm Products， Inc. Many farmers who invested in the equipment needed to make the switch from synthetic to organic fertilizers and pesticides feel that it would be too expensive to resume synthetic farming at this point. But studies of farmers who switched to organic farming last year indicate that their current crop yields are lower. Hence their purchase of organic farming equipment， a relatively minor investment compared to the losses that would result from continued lower crop yields， cannot justify persisting on an unwise course. And the choice to farm organically is financially unwise， given that it was motivated by environmental rather than economic concerns. Discuss how well reasoned.。. etc. This speaker argues that farmers who invested in organic farming equipment should resume synthetic farming because it is financially unwise to continue organic farming. The speaker cites studies showing that farmers who switched to organic farming last year had tower crop yields. Based on these studies， the speaker concludes that the relatively inexpensive investment in organic farming equipment cannot justify continuing to farm organically. The speaker also claims that continuing to farm organically is financially unwise because it is motivated by environmental， not economic， concerns. The argument suffers from three problems. One problem with this reasoning involves the vague comparative claim that farmers who switched to organic farming last year had lower crop yields. We are not informed whether the survey compared last years organic crop yields with yields from previous years or with those from synthetic farms. Moreover， the author provides no evidence about how the survey was conducted. Lacking more information about the survey， we cannot accept the speakers conclusion. | 
