While reading weaken type questions in powerscore bible , I came across three weakening scenarios which are as follows.
1 . Incomplete Information : The author fails to consider all of the possibilities or relies on information that is incomplete.
2. Improper comparison : The author tries to compare two items which are different.
3. Qualified conclusion : The author qualifies or limits the conclusion in such a way as to leave the argument open to attack.
Now , I have been able to weaken questions according to first point where a new info is presented . I have also seen plethora of questions where causality is being weakened , but I have rarely seen questions being attacked because of
2nd and 3rd feature being present in question . Can someone please provide some examples.