Self-harm standoff in a research complex parking lot; all-clear in about two hours

To check this alert, Claude (an AI) read it in full 25 separate times, independently. Each read decided whether the message answers each of the six questions and gave a short reason. A final reviewer then weighed all 25 and wrote the plain-English verdict you see when you open a row. The score (for example 22/25) is how many reads agreed; the 25 individual reads are tucked underneath if you want to check them.

• Sourceabsent8/25

  Final assessment

  Reads split, but the majority find no named agency in the text itself, only a cryptic code ('NCRB520') and a link to dpss.umich.edu that implies but doesn't state the Division of Public Safety and Security as sender.

  Who is sending the alert and who is responding. People act faster on a message from a clearly identifiable, credible sender, such as a named department, the police, or a branded alert system, than on an anonymous notice. A branded signature counts.

  See all 25 individual reads

  1. present: Links to 'dpss.umich.edu', the university's public safety department.
  2. absent: '2124 Emergency NCRB520' is a code, no clear issuing agency named though implicitly DPSS via link
  3. absent: No named agency or branded signature beyond generic 'Ann Arbor:' timestamp prefix.
  4. absent: No specific agency named, only implied via dpss.umich.edu link, 'Officers on scene' is generic.
  5. present: dpss.umich.edu link identifies the Division of Public Safety and Security as source.
  6. present: Points to 'dpss.umich.edu', the campus police site.
  7. absent: No specific agency identified beyond location label 'Ann Arbor:'.
  8. present: Links to 'dpss.umich.edu' identifying the Division of Public Safety and Security as sender.
  9. absent: No department name or branded alert signature, only 'Ann Arbor' location label.
  10. absent: 'Ann Arbor' with dpss.umich.edu link implies DPSS but not clearly named as sender in text.
  11. present: Links to dpss.umich.edu, identifying DPSS as source.
  12. absent: No specific sending agency named, only a generic 'Emergency' code label and link.
  13. absent: No sender, agency, or branded signature identifies who issued this.
  14. present: Links to 'dpss.umich.edu', the university's public safety department.
  15. absent: No sender, department, or branded system identified anywhere in the text (only a link to dpss.umich.edu).
  16. absent: Only references 'dpss.umich.edu' link, no clear sender/agency name in body text.
  17. absent: Only 'Officers on scene' given, no named agency or branded alert signature.
  18. present: Refers to dpss.umich.edu, the Division of Public Safety and Security, and 'Officers on scene'.
  19. absent: No sender or agency named beyond a link to dpss.umich.edu, not stated as sender in text itself.
  20. absent: No named issuing authority in the text; only a location/case code and website link.
  21. present: References 'dpss.umich.edu', Division of Public Safety and Security officers.
  22. absent: Only cryptic 'Emergency NCRB520' with a dpss.umich.edu link, no named agency or clear sender identified
  23. absent: No sender or issuing agency identified beyond a code label 'NCRB520'.
  24. absent: No specific agency named in the text itself, only a code and a link to dpss.umich.edu.
  25. absent: No sending agency or institution name given, only 'Ann Arbor' dateline and generic 'Officers on scene'.
• Hazardabsent0/25

  Final assessment

  Unanimous: 'Emergency NCRB520' is only a code, no specific hazard type is named.

  What the threat actually is. A complete warning names the specific danger, such as a shooter, a fire, a tornado, or a gas leak, rather than a vague emergency, because people decide what to do based on what they are facing.

  See all 25 individual reads

  1. absent: 'Emergency NCRB520' is a code, no specific threat type named.
  2. absent: no specific hazard type named, just 'Emergency NCRB520' code
  3. absent: Only says 'Emergency NCRB520', no specific threat type named.
  4. absent: 'Emergency NCRB520' is a generic code without naming a specific threat.
  5. absent: 'Emergency NCRB520' is a coded label, not a named specific threat.
  6. absent: 'Emergency NCRB520' is a code, not a named threat.
  7. absent: 'Emergency NCRB520' is a code, not a named hazard type.
  8. absent: Only 'Emergency NCRB520' is a code, no plain-language hazard named.
  9. absent: Only labeled 'Emergency NCRB520' without naming a specific threat type.
  10. absent: 'Emergency NCRB520' is a code, no specific hazard type named.
  11. absent: Only 'Emergency NCRB520' given, a code with no specific threat named.
  12. absent: 'Emergency NCRB520' is a code, not a named specific hazard.
  13. absent: 'Emergency NCRB520' is a code, not a named threat type.
  14. absent: 'Emergency NCRB520' is a code, not a named specific threat.
  15. absent: Only 'Emergency NCRB520' code given, no specific threat named.
  16. absent: 'Emergency NCRB520' is a code, not a named specific hazard.
  17. absent: 'Emergency NCRB520' is a code, not a named specific threat.
  18. absent: Only 'Emergency NCRB520' given as a code, no specific hazard type named.
  19. absent: Only 'Emergency NCRB520' code given, no specific hazard named.
  20. absent: 'Emergency NCRB520' is a generic code, no specific hazard type named.
  21. absent: 'Emergency NCRB520' is a code without naming a specific hazard.
  22. absent: 'Emergency NCRB520' is a code, not a named specific hazard
  23. absent: Only a code 'Emergency NCRB520' is given with no specific hazard type.
  24. absent: 'Emergency NCRB520' is a code, not a named specific threat.
  25. absent: Only 'Emergency NCRB520' code with no plain-language hazard description.
• Locationpresent16/25

  Final assessment

  Majority read the 'NCRB520' code plus 'the area' as at least a location reference, though a substantial minority found it too cryptic to count as a named place.

  Where the threat is. Saying whether danger is in a specific building, a part of campus, or area-wide lets people judge their own proximity and choose a safe direction. Without a where, a warning is hard to act on precisely.

  See all 25 individual reads

  1. present: 'NCRB520' functions as a location designator referenced as 'the area'.
  2. present: 'NCRB520' names a location code/area
  3. present: Names NCRB (implied building) via code, treated as location reference.
  4. present: 'NCRB520' area referenced as a location code.
  5. present: Names the NCRB520 area.
  6. present: Refers to 'the area' officers are clearing, though unnamed specifically.
  7. absent: 'NCRB520' is a code reference, no clear geographic location named.
  8. present: Names 'NCRB520' area.
  9. absent: No specific location beyond a code label 'NCRB520', not a named place.
  10. absent: No specific location named beyond 'the area', generic.
  11. absent: 'NCRB520' is a cryptic code, not a clearly named place.
  12. absent: No specific building or street named, only 'the area.'
  13. present: 'NCRB520' names a location code and 'Ann Arbor.'
  14. absent: Only refers to 'the area' without naming a specific place.
  15. present: Implies area near NCRB via code reference, but vague; still counted as an area reference.
  16. present: References area 'NCRB520' as a place code.
  17. present: 'Ann Arbor' and area implied via 'NCRB' though vague.
  18. absent: No specific location beyond a code reference 'NCRB520', not an identifiable place name for a reader.
  19. present: Implies 'NCRB' location via the code, referencing a specific building code.
  20. present: 'Ann Arbor' and implied area near NCRB give location context.
  21. present: Names 'NCRB520' area.
  22. present: Names 'NCRB520' as area/location reference
  23. absent: No specific place named beyond an unexplained code.
  24. present: References 'NCRB520' as a location code and 'the area'.
  25. absent: No specific area or building beyond a code reference 'NCRB520'.
• Guidancepresent25/25

  Final assessment

  Unanimous: 'Avoid the area...Do not enter the area until cleared' gives explicit protective instructions.

  The protective action to take. A clear, specific instruction, such as shelter in place, evacuate, avoid the area, or run-hide-fight, drives faster and more correct protective behavior than describing the threat alone.

  See all 25 individual reads

  1. present: Instructs 'Do not enter the area until cleared'.
  2. present: 'Avoid the area...Do not enter the area until cleared'
  3. present: Instructs 'Avoid the area...Do not enter the area until cleared.'
  4. present: 'Avoid the area...Do not enter the area until cleared' explicit instructions.
  5. present: Instructs to 'Avoid the area' and 'Do not enter the area until cleared'.
  6. present: Instructs 'Do not enter the area until cleared'.
  7. present: 'Avoid the area...Do not enter the area until cleared.'
  8. present: Instructs 'Avoid the area...Do not enter the area until cleared.'
  9. present: Instructs 'Avoid the area... Do not enter the area until cleared.'
  10. present: 'Avoid the area...Do not enter the area until cleared.'
  11. present: Instructs 'Avoid the area... Do not enter the area until cleared.'
  12. present: Instructs 'Avoid the area... Do not enter the area until cleared.'
  13. present: 'Avoid the area...Do not enter the area until cleared.'
  14. present: Instructs to 'Avoid the area' and 'Do not enter the area until cleared'.
  15. present: Instructs 'Avoid the area... Do not enter the area until cleared.'
  16. present: Instructs 'Avoid the area...Do not enter the area until cleared'.
  17. present: 'Avoid the area. Do not enter the area until cleared.'
  18. present: Instructs 'Avoid the area' and 'Do not enter the area until cleared'.
  19. present: Instructs 'Avoid the area...Do not enter the area until cleared.'
  20. present: 'Avoid the area...Do not enter the area until cleared' gives explicit protective action.
  21. present: Instructs 'Avoid the area...Do not enter the area until cleared'.
  22. present: Instructs 'Avoid the area...Do not enter the area until cleared'
  23. present: Instructs 'Avoid the area... Do not enter the area until cleared.'
  24. present: Instructs 'Avoid the area...Do not enter the area until cleared.'
  25. present: Instructs 'Avoid the area' and 'Do not enter the area until cleared'.
• Timepresent15/25

  Final assessment

  Majority read '2124' as a military-format clock time (9:24 PM), though a meaningful minority found it too ambiguous, reading it as part of the case code rather than a time.

  When the message applies. A timestamp, the word now or immediately, or a phrase like until further notice tells the reader whether the danger is current and how quickly to act.

  See all 25 individual reads

  1. present: Gives '2124', likely a 24-hour clock time.
  2. absent: no clock time or date given
  3. present: Gives '2124' as a time marker.
  4. present: '2124' given as a time code.
  5. present: States '2124', a military clock time.
  6. present: Gives '2124' (9:24 PM).
  7. absent: No clock time or date given, '2124' appears to be a code not a time.
  8. present: Gives '2124' as a time code.
  9. present: States '2124', a time code.
  10. absent: No clock time given beyond '2124' which appears to be a code, not clearly a time.
  11. absent: No time given.
  12. present: Gives '2124' as a time marker.
  13. absent: No clock time or date given.
  14. present: Gives '2124', a military-time timestamp.
  15. absent: No clock time or date given.
  16. present: States '2124', a time code.
  17. present: '2124' given as a time code.
  18. present: Gives '2124' as a timestamp.
  19. present: Gives '2124' as a time reference (9:24 PM in police time notation).
  20. present: '2124' likely denotes 9:24 PM military time.
  21. absent: No time reference given.
  22. absent: No specific time given
  23. absent: No clock time or date given, only a numeric code '2124'.
  24. absent: No clock time or date given, only '2124' which is ambiguous.
  25. present: Gives '2124' as a time reference.
• Impactabsent0/25

  Final assessment

  Unanimous: no stated consequence or severity is conveyed.

  What the hazard could do to the people in its path. Beyond naming the threat, a complete warning conveys its potential consequences or severity, such as that a tornado can level buildings or that a leak could be explosive, so recipients grasp how much danger they are in. Research on warning message content finds that a concrete impact statement helps people personalize their risk and act sooner.

  See all 25 individual reads

  1. absent: No stated consequence.
  2. absent: no stated consequence or severity
  3. absent: No stated consequence or severity.
  4. absent: No stated potential harm or severity.
  5. absent: No stated potential harm.
  6. absent: No stated harm or severity.
  7. absent: No stated potential harm or severity conveyed.
  8. absent: No explicit statement of potential harm.
  9. absent: No stated potential harm or severity.
  10. absent: No stated potential harm/severity.
  11. absent: No stated consequence or severity.
  12. absent: No explicit statement of potential harm or severity.
  13. absent: No stated harm or severity.
  14. absent: No explicit statement of potential harm.
  15. absent: No explicit statement of harm or severity.
  16. absent: No stated consequence or severity.
  17. absent: No stated consequence or severity given.
  18. absent: No explicit statement of potential harm or severity.
  19. absent: No explicit statement of potential harm or severity.
  20. absent: No stated consequence or severity conveyed.
  21. absent: No stated consequence.
  22. absent: No statement of potential harm or severity
  23. absent: No stated potential harm or severity.
  24. absent: No explicit statement of potential harm.
  25. absent: No stated potential harm.