Passage Summary: A manager decides that customers hate potatoes entirely just because they aren't ordering one specific cheesy potato dish on the menu.

Conclusion: The restaurant's customers generally prefer not to eat potatoes.

Reasoning: Among three new vegetarian dishes, the potato dish is never ordered, even though it is the least expensive option.

Analysis: The manager is jumping to a very broad conclusion based on a very narrow set of data. Just because customers aren't ordering the 'potatoes baked with cheese' doesn't mean they dislike potatoes in general; they might just dislike that specific recipe or prefer the other two options more. Perhaps the patrons would love french fries or mashed potatoes, but the manager has ignored those possibilities. Look for an error that describes taking a lack of interest in one specific version of a thing as evidence of a dislike for the thing itself.