The Detective’s DeskSuri Gray
Proposed deduction
“Buy 9 packs.”
MEDIUM · CASE FILE
Enough invitations
Medium · PINE COMMUNITY HALL
The hall must send every invitation today. Four volunteers proposed how many sealed packs to buy. Also reconstruct the review register: it records who examined which source, independently of whether their later proposed answer is correct. Review slots describe order, not travel or clock times.
Read the case file below, or open the interactive desk to examine records, keep notes and submit your reasoning. These are the case materials, without the solution.
Your assignment
Who proposed the minimum sufficient purchase?
- The analytical records answer the analytical question; worksheet records establish the review reconstruction. Candidate proposals and supplementary recollections are claims to test.
- There are 2 ordered events. Use each listed person and item once in its column. “A immediately before B” means A is in the row directly above B, with no row between them.
- 4 verified records support the complete submission. Keep the separate context note out of the proof.
- No outside facts or unstated exceptions are required. The complete board and report are assessed together.
People and accounts
Tobin Lane
Proposed deduction
“Buy 10 packs.”
Pia Snow
Proposed deduction
“Buy 8 packs.”
Rafi Elm
Proposed deduction
“Buy 7 packs.”
Case records
Read each record on its own terms. A claim made by a person is different from a fact established by an independent record.
LINKED RECORD
Stationery offer
New invitations come only in sealed packs of 8. Packs cannot be split.
This requires rounding the remaining need up to whole packs.
CONTEXT NOTE
Envelope colour
The committee chose pale green envelopes.
Colour does not affect quantities.
PRIMARY RECORD
Mailing list
Exactly 73 invitations are required. Eleven usable blank invitations remain in stock.
This establishes the net number still needed.
RECONSTRUCTION RECORD
Review register
This is the same investigation’s document review record. There are 2 ordered events, labelled Review 1, Review 2. Each listed person and item occurs exactly once. These slots describe record order, not times from the analytical problem.
- The event reviewed by Pia Snow occupies slot 1 (Review 1).
Use each column’s choices exactly once. Verified relationships govern the board; proposed answers and later recollections do not override them.
RECONSTRUCTION RECORD
Review cross-check
The relationships below were verified independently. “A immediately before B” means A is in the row directly above B, with no row between them. Keep relationships from all worksheet sources together.
- The event involving “Stationery offer” occupies slot 1 (Review 1).
Use each column’s choices exactly once. Verified relationships govern the board; proposed answers and later recollections do not override them.
Questions to resolve
When was the primary analytical record reviewed?
Use the interactive case desk to select your finding and cite the records that support it. The answer is checked there, and your progress stays in your browser.
Build your finding
Compare the records with each account. Work out what the evidence establishes, then separate that finding from anything it does not prove.