Difference Between "fails to consider" and "fails to estab"

[sengdykes]

What's the difference between answer choices that start with "the argument fails to consider" and one that starts with "the argument fails to establish"? I'm not sure how these two phrases differ from one another. For flaw questions, answer choices that are objections can begin with "the argument fails to consider." But I do not see how that is different from "the argument fails to establish". Wouldn't something need to be established in order to be considered?

[ohthatpatrick]

Yeah, you're right on the cusp of it.

Fails to consider / neglects to consider = WEAKEN answer choices
Fails to establish / neglects to specify = ASSUMPTION answer choices

example:
Bob applied to Jackson University, so he clearly wants to go to a good school.

What is this argument assuming?

Among other things, it's assuming that "Jackson University is a good school".

So a correct answer could say that the argument
fails to establish that Jackson University is a good school

or a correct answer could say that the argument
fails to consider that Jackson University is a very low quality school

We would only get mad at an author for failing to establish/specify some idea if we NEED (necessary assumption) to hear that idea to accept her argument.

We would only get mad at an author for failing to consider some idea if that idea had the potential to unravel the author's thinking.