Museum Memo: Purpose and Argument Movement
Curator Lena is drafting a memo for a museum's collections committee. She writes: 'The ceramics in Gallery B were catalogued as decorative because of their painted scenes. A re-examination of 84 bowls found food residue and knife scratches on 61. If display were the sole purpose, such wear would be unlikely. We propose reclassifying the collection as domestic ware. The change affects wall labels and catalogue entries, not the objects' legal status or insurance value.' The committee has 12 minutes to debate. One member says the memo's main point is that the bowls are beautiful; another says it is that the bowls were used. Lena wants the memo to be read as a proposal, not a complaint. She also needs the committee to see how the evidence is arranged: problem, evidence, proposal, scope.
1. What is the memo's main purpose: to praise the beauty of the bowls or to recommend a cataloguing change? Explain using the memo's structure.
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The main purpose is to recommend a cataloguing change. The memo opens with the current classification ('decorative because of their painted scenes'), then presents re-examination evidence, then states a conditional inference, then says 'We propose reclassifying the collection as domestic ware.' That proposal sentence is the clearest purpose signal.
Beauty is not the memo's recommendation; painted scenes are mentioned only to explain the old label. The memo does not ask the committee to admire the bowls. It asks them to accept a new category based on wear evidence. The final sentence further limits the proposal's consequences, which fits a practical recommendation rather than praise.
2. Which sentence is the main idea, and which is supporting evidence? Explain the difference.
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The main idea is the proposal to reclassify the collection as domestic ware. The supporting evidence is the finding of food residue and knife scratches on 61 of 84 bowls, along with the conditional statement that such wear would be unlikely if display were the sole purpose.
The proposal is the claim the memo wants the committee to accept. The wear evidence is what makes that claim credible. The conditional sentence is also not the main idea: it is a reasoning step that connects the evidence to the proposal. A useful test is to ask, 'What does the memo want done?' The answer is the reclassification, not the description of the scratches.
3. How does the memo organize its argument? Name the moves and explain why the final sentence matters.
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The memo moves through four recognizable stages: current classification → new evidence → inference → proposal, then adds a scope limitation. It begins with why the bowls were called decorative, presents the re-examination results, reasons that display-only use would not explain the wear, and proposes domestic ware.
The final sentence matters because it narrows the proposal's effects to labels and catalogue entries, explicitly excluding legal status and insurance value. That preempts an overreaction from the committee. Structurally, it is not a new main idea; it is a boundary condition that makes the proposal easier to accept. Recognizing that move helps a reader avoid treating the scope sentence as the memo's central claim.