The Detective’s DeskMads Vale
Proposed deduction
“My badge grants access now.”
MEDIUM · CASE FILE
Permission at the inner door
Medium · GLASS ARCHIVE ANNEX
Four staff present their badges at 16:00 on 12 May. Determine which badge satisfies every condition for the inner door. 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 has valid access at that moment?
- The analytical records answer the analytical question; worksheet records establish the review reconstruction. Candidate proposals and supplementary recollections are claims to test.
- There are 3 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
Neri Cole
Proposed deduction
“My badge grants access now.”
Osa Ward
Proposed deduction
“My badge grants access now.”
Luma Gray
Proposed deduction
“My badge grants access now.”
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.
PRIMARY RECORD
Inner-door policy
Access requires BOTH archive clearance and a current training certificate. A certificate is current through its printed expiry date, but not afterward.
This defines the combined requirements and expiry boundary.
LINKED RECORD
Credential register
Luma: archive clearance, expiry 12 May; Mads: archive clearance, expiry 11 May; Neri: visitor clearance, expiry 20 May; Osa: visitor clearance, expiry 10 May. All dates are this year.
This supplies each person’s credentials.
CONTEXT NOTE
Badge colours
The four badge holders use different coloured lanyards.
Lanyard colour is not part of the access policy.
RECONSTRUCTION RECORD
Review register
This is the same investigation’s document review record. There are 3 ordered events, labelled Review 1, Review 2, Review 3. Each listed person and item occurs exactly once. These slots describe record order, not times from the analytical problem.
- The event reviewed by Luma Gray occupies slot 3 (Review 3).
- The event involving “Badge colours” occurs immediately before the event reviewed by Mads Vale (consecutive rows, with no event between them).
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 “Credential register” occupies slot 2 (Review 2).
Use each column’s choices exactly once. Verified relationships govern the board; proposed answers and later recollections do not override them.
Questions to resolve
Match every recorded item to its handler or reviewer.
- Badge colours
- Credential register
- Inner-door policy
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.