Passage Summary: Some people think calculators are great because they do the boring math for you, but the author argues that doing the boring math by hand is actually how you learn the big ideas, so we should limit calculator use.

Conclusion: It is appropriate to limit the use of calculators in mathematics education.

Reasoning: While calculators save time on rote work, the act of doing that rote work manually is actually what helps students internalize and remember the underlying mathematical principles.

Analysis: The argument hinges on the idea that 'grounding' principles in 'painstaking applications' is the best way to learn. To strengthen this, we need to bolster the link between manual calculation and long-term retention or understanding. Look for an answer that confirms that students who don't use calculators actually perform better or understand principles more deeply than those who do.