The Detective’s DeskElin Fox
Maker
“My sample is the non-attracted comparison type.”
EASY · CASE FILE
The quiet magnet
Easy · TINKER WORKSHOP
An unlabelled sample was recovered from a workbench. A controlled test found it was not attracted to the workshop magnet. The same test was performed on each maker’s sample type. Identify the matching maker.
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
Inspect, test and record the finding. What does the verified record establish?
- The candidate descriptions and supplied records are verified.
- Use the stated rules and records; no outside knowledge is needed.
People and accounts
Finn Holt
Maker
“My sample is the first attracted type.”
Greta Pike
Maker
“My sample is the second attracted type.”
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.
DESK RECORD
The supply receipt
The workshop bought metal samples last month without recording which maker used each bench.
The workshop bought metal samples last month without recording which maker used each bench.
CONTROLLED MAGNET TEST
One non-attracted sample
The recovered sample was NOT attracted. The verified comparison tests were: Elin’s type — NOT attracted; Finn’s type — attracted; Greta’s type — attracted. All samples were bare and unmodified.
This is a verified source record for this case. Compare its stated facts with the exact question.
LOCATION SKETCH
The workbench sketch
Several samples were mixed on the same bench. Their positions were not recorded.
Several samples were mixed on the same bench. Their positions were not recorded.
Questions to resolve
Which candidates satisfy all the stated requirements?
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.