Most movie critics believe that sentimentality detracts from aesthetic value.
Conclusion
These critics are wrong, i.e. Sentimentality does not detract form aesthetic value.
Evidence (since)
The reason they hold this belief is that sentimentality is so common that when it's not there, it's a pleasant change, for these critics.
It's like if your food were usually prepared with garlic, you might start to think that garlic detracts from the quality of the food (because when you try something that doesn't taste like garlic, you're kinda like, "Heyyy, that's different!")
Evaluate
When we're doing Flaw and the author's argument sounds like a rebuttal, it should put us on high alert for certain flaws:
- Ad Hominem (dismissing a point of view because the source has some biased interest or conflicting past behavior) - Unproven vs. Proven False (the author says that someone's attempt to prove X failed and then concludes that X itself is false)
This argument has a flavor of Ad Hominem --- the author is saying .
And it has the flavor of Unproven vs. Proven False --- the author is concluding the opposite of the original claim, because the reason (the evidence) offered in support is sketchy.
Finally, we could try to pick at the analogy presented and think of salient differences between the movie critics' situation and the sick-of-this-typical-flavor situation.
Goal
Let's look for something saying,