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

To check this alert, Claude Opus 5.5 (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.

• Sourcepresent21/25

  Final assessment

  Present by a 21 to 4 majority: the "Ann Arbor:" campus tag and the dpss.umich.edu link identify the sender. Dissenters read "Ann Arbor" as only a place label.

  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: The 'Ann Arbor:' campus tag and dpss.umich.edu link identify the sender.
  2. present: 'Ann Arbor' tag and dpss URL identify the sender.
  3. present: The 'Ann Arbor:' tag, the reference to officers, and the dpss.umich.edu link point to U-M police as sender.
  4. present: 'Ann Arbor:' tag and officers point to U-M police.
  5. present: It opens with 'Ann Arbor:' and points to dpss.umich.edu, the DPSS alert tag.
  6. absent: "Ann Arbor:" is a place label and only a URL follows, so no sender is named.
  7. present: Refers to officers on scene and links dpss.umich.edu.
  8. present: It opens with "Ann Arbor:" and refers to officers on scene, identifying the campus authority.
  9. present: The "Ann Arbor:" tag and dpss.umich.edu link identify the campus sender.
  10. present: It opens with 'Ann Arbor:' and links dpss.umich.edu, identifying the U-M alert source.
  11. present: The "Ann Arbor:" campus tag and DPSS link identify the sender.
  12. present: The "Ann Arbor:" campus tag identifies the sending university.
  13. present: The "Ann Arbor:" campus tag and dpss.umich.edu identify the source.
  14. absent: No agency or branded tag is named; "Ann Arbor" is a place and officers are unnamed.
  15. present: The 'Ann Arbor:' campus tag and DPSS update link identify the sender.
  16. present: "Ann Arbor:" with officers and the dpss.umich.edu link identifies the sender.
  17. absent: 'Ann Arbor:' is a campus label and no sender or agency is named.
  18. present: The 'Ann Arbor:' tag and dpss.umich.edu link identify the U-M campus sender.
  19. present: Tagged 'Ann Arbor' with the dpss.umich.edu link, identifying the U-M sender.
  20. present: Ann Arbor tag with DPSS link identifies the sender.
  21. present: The 'Ann Arbor' tag and DPSS update link identify the source.
  22. present: It carries the 'Ann Arbor:' campus alert tag and links DPSS.
  23. absent: It carries only the location tag 'Ann Arbor' and a URL; no sender is named.
  24. present: The "Ann Arbor:" tag and dpss.umich.edu link identify the U-M alert source.
  25. present: It opens with the campus tag 'Ann Arbor:', notes 'Officers on scene', and points to dpss.umich.edu, identifying the sender.
• Hazardabsent0/25

  Final assessment

  All 25 reads agree the hazard is absent: the alert says only "Emergency", a generic term that names no specific threat.

  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: It says only 'Emergency', a generic term that names no specific threat.
  2. absent: 'Emergency' alone names no specific hazard.
  3. absent: It says only 'Emergency', a generic word that names no hazard.
  4. absent: Only 'Emergency', which is generic.
  5. absent: It says only 'Emergency', a generic word that names no specific hazard.
  6. absent: "Emergency" is generic and names no specific threat.
  7. absent: Only 'Emergency', a generic word.
  8. absent: "Emergency" alone does not name a specific hazard.
  9. absent: "Emergency" is generic and names no specific threat.
  10. absent: It says only 'Emergency', which does not name a specific hazard.
  11. absent: "Emergency" alone does not name a specific hazard.
  12. absent: It says only "Emergency", which is generic.
  13. absent: "Emergency" alone names no specific threat.
  14. absent: "Emergency" alone does not name a specific hazard.
  15. absent: Only 'Emergency', a generic word.
  16. absent: "Emergency" alone is generic and does not name the hazard.
  17. absent: 'Emergency' alone does not name the hazard.
  18. absent: 'Emergency' alone does not name a specific hazard.
  19. absent: Says only 'Emergency', which is generic.
  20. absent: "Emergency" is generic, no hazard named.
  21. absent: 'Emergency' alone does not name a hazard.
  22. absent: 'Emergency' is generic and names no specific threat.
  23. absent: It says only '2124 Emergency', a generic term without a named threat.
  24. absent: "Emergency" alone does not name a specific hazard.
  25. absent: It says only '2124 Emergency', a generic term that does not name what the threat is.
• Locationpresent25/25

  Final assessment

  Unanimous: the alert names a specific location, "NCRB520".

  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: It names 'NCRB520'.
  2. present: It names NCRB520.
  3. present: It gives location code 2124 NCRB520.
  4. present: NCRB520.
  5. present: It gives 'NCRB520'.
  6. present: It gives "2124" and "NCRB520".
  7. present: Gives NCRB520.
  8. present: It specifies NCRB520.
  9. present: It gives NCRB520.
  10. present: It names 'NCRB520'.
  11. present: It names "NCRB520".
  12. present: It gives NCRB520.
  13. present: It gives NCRB520.
  14. present: It names NCRB520.
  15. present: 'NCRB520'.
  16. present: It gives "NCRB520".
  17. present: It gives NCRB520.
  18. present: It gives NCRB520.
  19. present: 'NCRB520'.
  20. present: NCRB520.
  21. present: It gives NCRB520.
  22. present: It gives 'NCRB520'.
  23. present: It gives 'NCRB520'.
  24. present: It gives NCRB520.
  25. present: It gives the location 'NCRB520'.
• Guidancepresent25/25

  Final assessment

  All reads agree guidance is present: "Avoid the area" and "Do not enter the area until cleared".

  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: It instructs 'Avoid the area' and 'Do not enter the area until cleared'.
  2. present: It says 'Avoid the area' and 'Do not enter'.
  3. present: It instructs 'Avoid the area' and 'Do not enter the area until cleared'.
  4. present: 'Avoid the area' and do not enter.
  5. present: It instructs 'Avoid the area' and 'Do not enter the area until cleared'.
  6. present: It instructs "Avoid the area" and "Do not enter the area until cleared".
  7. present: Says 'Avoid the area' and 'Do not enter'.
  8. present: It says "Avoid the area" and "Do not enter the area until cleared".
  9. present: It says "Avoid the area" and do not enter.
  10. present: It instructs 'Avoid the area' and 'Do not enter the area until cleared'.
  11. present: It instructs "Avoid the area" and not to enter.
  12. present: It says "Avoid the area" and do not enter.
  13. present: It says "Avoid the area" and not to enter.
  14. present: It says avoid the area and do not enter until cleared.
  15. present: 'Avoid the area' and 'Do not enter'.
  16. present: It says "Avoid the area" and "Do not enter the area".
  17. present: It says 'Avoid the area' and 'Do not enter the area until cleared'.
  18. present: It says 'Avoid the area' and 'Do not enter the area until cleared'.
  19. present: 'Avoid the area' and 'Do not enter the area until cleared'.
  20. present: Avoid the area, do not enter.
  21. present: It says 'Avoid the area' and do not enter.
  22. present: It says 'Avoid the area' and 'Do not enter the area until cleared'.
  23. present: It says 'Avoid the area' and 'Do not enter the area until cleared'.
  24. present: It says "Avoid the area" and "Do not enter".
  25. present: It instructs 'Avoid the area' and 'Do not enter the area until cleared'.
• Timepresent15/25

  Final assessment

  Present by a 15 to 10 majority: "2124" reads as a clock time and "Officers on scene" signals the situation is current. Dissenters found "2124" ambiguous and saw no clear time cue.

  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: The '2124' reads as a clock time, and officers are on scene now.
  2. present: '2124' appears to be a clock time.
  3. present: 'until cleared' conveys an ongoing time frame.
  4. present: 'Until cleared' and officers now on scene.
  5. present: It gives '2124', a clock time, and 'until cleared'.
  6. absent: No clock time, date, or recency cue appears.
  7. absent: '2124' is ambiguous and there is no clear time cue.
  8. present: "until cleared" conveys duration of the restriction.
  9. present: "until cleared" sets a duration like until further notice.
  10. present: '2124' reads as a 24 hour clock time for the alert.
  11. present: "2124" appears to give the time in 24-hour format.
  12. present: It gives the time "2124".
  13. present: "2124" reads as a 24-hour clock time, and "until cleared" is given.
  14. absent: No time or recency cue appears.
  15. present: 'until cleared' conveys duration.
  16. present: "until cleared" and the apparent time "2124" convey timing.
  17. absent: No time or recency cue appears.
  18. present: '2124' reads as a 24-hour clock time.
  19. absent: No clock time or recency cue.
  20. absent: No time cue.
  21. absent: No time or recency cue is given.
  22. absent: No time or recency cue appears.
  23. absent: No time, date, or recency word appears.
  24. absent: "2124" is ambiguous, and no clear time or recency cue appears.
  25. present: It says not to enter 'until cleared', an until-further-notice cue for timing.
• Impactabsent0/25

  Final assessment

  All 25 reads agree impact is absent: no consequence or severity is stated.

  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 consequence or severity is stated.
  2. absent: No consequence or severity is stated.
  3. absent: No consequence or severity is stated.
  4. absent: No consequence stated.
  5. absent: No consequence or severity is conveyed.
  6. absent: No consequence or severity is conveyed.
  7. absent: No consequence or severity is stated.
  8. absent: No consequence or severity is stated.
  9. absent: No consequence or severity is stated.
  10. absent: No consequence or severity is stated.
  11. absent: No consequence or severity is stated.
  12. absent: No consequence or severity is stated.
  13. absent: No consequence or severity is stated.
  14. absent: No consequence or severity is stated.
  15. absent: No consequence or severity is conveyed.
  16. absent: No consequence or severity is stated.
  17. absent: No consequence or severity is conveyed.
  18. absent: No consequence or severity is stated.
  19. absent: No consequence or severity stated.
  20. absent: No consequence stated.
  21. absent: No consequence is stated.
  22. absent: No consequence or severity is stated.
  23. absent: No consequence or severity is stated.
  24. absent: No consequence or severity is conveyed.
  25. absent: It gives no statement of consequences or severity for the unnamed emergency.