Generalize:
10 yrs ago-wooden sleds
Now-plastic- diff to steer but fast
Conclusion:
Plastic seld more dangerous since more injuries
We need to weaken the conclusion.
(A) A few children still use traditional wooden sleds.-Ok. So what? Does this tell us the injury rate is higher or lower than plastic? We have no data about the number sold.
(B) Very few children wear any kind of protective gear, such as helmets, while sledding.- Very few? How few? and how many children sled anyway? Also, this could mean very few wore protective gear when using wooden sleds 10 years ago. Is this data only for plastic sleds? Too many uncertainties. Incorrect.
...
10 yrs ago-wooden sleds
Now-plastic- diff to steer but fast
Conclusion:
Plastic seld more dangerous since more injuries
We need to weaken the conclusion.
(A) A few children still use traditional wooden sleds.-Ok. So what? Does this tell us the injury rate is higher or lower than plastic? We have no data about the number sold.
(B) Very few children wear any kind of protective gear, such as helmets, while sledding.- Very few? How few? and how many children sled anyway? Also, this could mean very few wore protective gear when using wooden sleds 10 years ago. Is this data only for plastic sleds? Too many uncertainties. Incorrect.
...
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