i am not able to understand how E is weakening the argument
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thephoenix
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11.Taken together, some 2,000 stocks recommended on a popular television show over the course of the past 12 years by the show's guests, most of whom are successful consultants for multibillion-dollar stock portfolios, performed less uccessfully than the market as a whole for this 12-year period. So clearly, no one should ever follow any recommendation by these so-called experts.
E. The stock portfolios for which the guests were consultants performed better for the past 12-year period than the market as a whole.
The argument clearly states the following:
- taken together, the 2000 stocks recommended performed badly
- no one should follow these experts' advice
E is a weakening statement because it does not refer to the 2000 stocks recommended throughout the life of the show, but to the portfolios that the successful consultants recommended on their own. The other recommendations might have been pretty disastrous (hence the poorer performance of the 2000 combined stock) or the portfolio obtained by putting the 2000 stock together was not carefully selected (just made up of piling all the recommendations together). These two elements explain why the 2000 stocks did not perform well, but advice from consultants taken independently is still a good idea.
