The following appeared in the health section of a magazine on trends and lifestyles.
"People who use the artificial sweetener aspartame are better off consuming sugar, since aspartame can actually contribute to weight gain
rather than weight loss. For example, high levels of aspartame have been shown to trigger a craving for food by depleting the brain of a
chemical that registers satiety, or the sense of being full. Furthermore, studies suggest that sugars, if consumed after at least 45 minutes of
continuous exercise, actually enhance the body’s ability to burn fat. Consequently, those who drink aspartame-sweetened juices after
exercise will also lose this calorie-burning benefit. Thus it appears that people consuming aspartame rather than sugar are unlikely to
achieve their dietary goals."
Discuss how well reasoned . . . etc.

-not enough factors to arrive at conclusion
-Its affects on the overall consumption of food, like its effect on consuming different types of food not known.
-Apart from tehse 2 factors there might be many more ways of achieving the dietary goals, which might not be possible in the case of sugar
In the above argment , only two factors are stated to arrive at the conclusion that people consuming aspartame rather than sugar are unlikely to achieve their dietary goals. There may well be many more factors that act in favour of people consuming aspartame and bring out the advantages of using aspartame over sugar.
Though there are disadvantages in using aspartame, there might also be certain disadvantages n using the same. The argument should explore both sides of the coin before coming to a conclusion. The mode of reasoning in the above argument is from only one side of the fence, it would have been held in better stead if the pros and cons of aspartame over sugar were discussed. The argument sould list the advantages and disadvantes of aspartame and then reason out the dominance of one aspect over the other.
The argument takes into consideration only ceratin factors before coming to a premature coclunsion. The conclusion must be reached taking into account the full spectrum of factors.