Professor: It has been argued that freedom of thought is a precondition for intellectual progress, because freedom of thought allows thinkers to pursue their ideas, regardless of whom these ideas offend, in whatever direction they lead.
Conclusion
This argument for freedom of thought fails: We can't say that because freedom of thought lets people pursue their ideas wherever that takes them, "intellectual progress requires freedom of thought".
Evidence
Intellectual progress requires "mining the full implications of interrelated ideas", and that requires intellectual discipline.
Evaluate
Are we sure we want to go back to school, if this is how professors talk?
It's a little unspecific what our conclusion means. An argument can fail because a premise is false, the conclusion is false, or simply because the conclusion doesn't follow from the premises.
But since the author's evidence talks about "intellectual progress", let's focus on the intellectual progress part of the conclusion and assume our author wants to argue that,
intellectual progress does not require freedom of thought.
"Freedom of thought" doesn't show up in the evidence, so it needs to show up in the correct answer.
What do we know about intellectual progress from the evidence?
Intellectual Mining full Intellectual progress → implications of → discipline interrelated ideas
Let's just think about how this argument would work on a basic level. Conclusion: X doesn't require A. Premise: X requires B which requires C.
It looks like we're missing . We'd also accept .
Goal
We need an answer that helps us make either of these moves:
If we need intellectual discipline, then we don't need freedom of thought. If we need to mine full implications of ideas, then we don't need freedom of thought.