Emailed bomb threat evacuates the student union; cleared in about 90 minutes

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.

• Sourceabsent0/25

  Final assessment

  Unanimous: no sender tag, agency, or university self-identification appears in the text.

  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. absent: No sender tag, agency, or university self-identification appears in the text.
  2. absent: No sender, agency, or branded signature is present in the text.
  3. absent: No sender name, branded signature, or responding authority is identified.
  4. absent: No sender, agency, or branded signature is named in the text.
  5. absent: No sender tag, university name, or agency identifies who issued this message.
  6. absent: No sender tag, agency, or university name appears in the text itself.
  7. absent: No sender tag, agency, or university self-identification appears in the text.
  8. absent: No sender tag or named authority appears in the text.
  9. absent: No sender tag, university name, or agency is identified anywhere in the text.
  10. absent: No sender tag or issuing authority is named anywhere in the text.
  11. absent: No sender tag, university self-naming, or agency identifies who is sending this.
  12. absent: No sender tag or issuing authority is named in the text.
  13. absent: No sender, alert brand, or responding authority is named in the text.
  14. absent: No sender tag or named authority appears in the message text.
  15. absent: No sender tag, university name, or agency is identified in the text.
  16. absent: No sender name, branded signature, agency, or self-identifying authority appears in the text.
  17. absent: No sender, branded tag, or authority identifies itself in the text.
  18. absent: No branded signature, agency, or university self-naming appears in the text.
  19. absent: No sender, agency, or branded signature appears in the text.
  20. absent: No sender, alert brand, university, or agency identifies who issued this message.
  21. absent: No sender tag or authority identifies itself in the text.
  22. absent: No sender tag, university name, or agency is identified in the message text.
  23. absent: No sender tag, agency, or university name appears in the text.
  24. absent: No sender tag or named authority appears in the text.
  25. absent: No sender tag, university name, or agency identifies who issued this message.
• Hazardabsent0/25

  Final assessment

  Unanimous: the message references that building and the area but 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 refers to "that building" and "the area" but never names what the threat is.
  2. absent: No specific hazard is named; only "that building" is referenced without a threat.
  3. absent: No specific threat is named, only an instruction tied to "that building".
  4. absent: It references "that building" and "the area" but names no specific hazard.
  5. absent: It refers only to "that building" and "the area" without naming any specific threat.
  6. absent: No specific hazard is named; it only references "that building" and orders evacuation.
  7. absent: References "that building" and "the area" but names no specific threat.
  8. absent: It mentions a building to evacuate but names no specific threat, only "This is not a drill".
  9. absent: No specific hazard is named, only "that building" and "the area".
  10. absent: No specific threat is named; only an instruction tied to "that building" without naming the hazard.
  11. absent: No specific hazard is named; the threat type is not stated in this text.
  12. absent: No specific hazard is named; it only refers vaguely to "that building" and "the area".
  13. absent: No specific threat is named; it only says "that building" without stating the hazard.
  14. absent: No specific hazard is named; it tells people to evacuate without stating the threat.
  15. absent: No specific threat is named; only "that building" and "the area" are referenced.
  16. absent: No specific hazard is named, only a generic instruction to evacuate "that building".
  17. absent: No specific hazard is named, only an evacuation instruction without stating the threat.
  18. absent: No specific hazard is named; it only references "that building" and "the area".
  19. absent: No specific hazard is named; it refers only to "that building" and "the area".
  20. absent: No specific hazard is named; it references "that building" and "the area" without saying the threat.
  21. absent: No specific hazard named; refers only to "that building" and an evacuation.
  22. absent: No specific hazard is named; "that building" and "the area" do not state a threat type.
  23. absent: No specific hazard is named; it only references "that building" and an evacuation.
  24. absent: No specific threat is named; only "that building" and evacuation are referenced.
  25. absent: It mentions evacuating "that building" but names no specific hazard in this text.
• Locationpresent25/25

  Final assessment

  All reads agree on a location reference, that building and beyond 500 feet from it.

  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 says "that building" and "further than 500 feet from the building", a location reference.
  2. present: It references "that building" and "the area" with a 500 foot distance.
  3. present: It references "that building" and a distance "500 feet from the building".
  4. present: It refers to "that building" and "further than 500 feet from the building", a place.
  5. present: It references "that building" and "the area" plus "500 feet from the building", a relative location.
  6. present: It references "that building" and "the area" plus "500 feet from the building", a place.
  7. present: Refers to "that building" and "the area, further than 500 feet from the building", a place.
  8. present: It refers to "that building" and "the area" within "500 feet", a location reference.
  9. present: Refers to "that building" and "further than 500 feet from the building", a place.
  10. present: It references "that building" and a perimeter of "500 feet from the building", a location.
  11. present: Refers to "that building" and "the area", with a distance of "500 feet from the building".
  12. present: It refers to "that building" and "further than 500 feet from the building", a location reference.
  13. present: It references "that building" and "further than 500 feet from the building", a location.
  14. present: Refers to "that building" and a "500 feet from the building" perimeter, a place reference.
  15. present: Refers to "that building" and "further than 500 feet from the building", a location.
  16. present: References "that building" and a distance "further than 500 feet from the building", a location.
  17. present: References "that building" and "the area" with a 500-foot distance, a place reference.
  18. present: It refers to "that building" and "the area" plus a "500 feet" distance, a location reference.
  19. present: It references "that building" and "the area" and "500 feet from the building", a place.
  20. present: It refers to "that building" and "the area", a specific place even if unnamed here.
  21. present: Refers to "that building" and "the area" with a 500-foot distance, a place reference.
  22. present: It references "that building" and "further than 500 feet from the building", a relative location.
  23. present: It references "that building" and distance "further than 500 feet from the building", a place.
  24. present: References "that building" and "the area" within 500 feet, a location cue.
  25. present: It refers to "that building" and "further than 500 feet from the building", a location.
• Guidancepresent25/25

  Final assessment

  Unanimous: the alert instructs recipients to evacuate and remain clear of the area, protective actions.

  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 recipients to "evacuate" and "remain clear of the area", protective actions.
  2. present: It instructs recipients to "evacuate" and "remain clear of the area".
  3. present: It instructs recipients to "evacuate" and "remain clear of the area".
  4. present: It instructs "evacuate" and "remain clear of the area", protective actions.
  5. present: It instructs recipients to "evacuate" and "remain clear of the area" beyond 500 feet.
  6. present: It instructs recipients to "evacuate" and "remain clear of the area", protective actions.
  7. present: Instructs recipients to "evacuate" and "remain clear of the area", protective actions.
  8. present: It tells recipients to "evacuate" and "remain clear of the area", protective actions.
  9. present: Instructs "evacuate if in that building and remain clear of the area", protective actions.
  10. present: It instructs recipients to "evacuate" and "remain clear of the area", protective actions.
  11. present: Instructs recipients to "evacuate if in that building and remain clear of the area", protective actions.
  12. present: It instructs recipients to "evacuate" and "remain clear of the area".
  13. present: It instructs recipients to "evacuate" and "remain clear of the area", protective actions.
  14. present: Instructs recipients to "evacuate" and "remain clear of the area", protective actions.
  15. present: Instructs recipients to "evacuate" and "remain clear of the area", protective actions.
  16. present: Instructs recipients to "evacuate" and "remain clear of the area", protective actions.
  17. present: Instructs recipients to "evacuate" and "remain clear of the area".
  18. present: It instructs people to "evacuate" and "remain clear of the area", protective actions.
  19. present: It instructs recipients to "evacuate" and "remain clear of the area", protective actions.
  20. present: It instructs recipients to "evacuate" and "remain clear of the area, further than 500 feet".
  21. present: Instructs recipients to "evacuate" and "remain clear of the area".
  22. present: It instructs recipients to "evacuate" and "remain clear of the area", protective actions.
  23. present: It instructs "evacuate" and "remain clear of the area", protective actions.
  24. present: Instructs recipients to "evacuate" and "remain clear of the area", protective actions.
  25. present: It instructs recipients to "evacuate" and "remain clear of the area", protective actions.
• Timeabsent0/25

  Final assessment

  Unanimous: no clock time, date, or recency cue appears, so timing is absent.

  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. absent: No clock time, date, or recency cue such as "now" appears.
  2. absent: No clock time, date, or recency cue appears.
  3. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
  4. absent: No clock time, date, or recency cue appears in the text.
  5. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
  6. absent: No clock time, date, or recency cue appears; "This is not a drill" conveys seriousness, not time.
  7. absent: No clock time, date, or recency cue appears in the text.
  8. absent: No clock time, date, or recency word such as "now" or "immediately" appears.
  9. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
  10. absent: No clock time, date, or recency cue appears; "This is not a drill" is not a time reference.
  11. absent: No clock time, date, or recency cue appears in the text.
  12. absent: No clock time, date, or recency cue appears.
  13. absent: No clock time, date, or recency word like "now" appears; "This is not a drill" is not a time cue.
  14. absent: No clock time, date, or recency cue such as now or immediately appears.
  15. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
  16. absent: No clock time, date, or recency word such as "now" appears.
  17. absent: No clock time, date, or recency cue appears in the text.
  18. absent: No clock time, date, or recency cue appears in the text.
  19. absent: No clock time, date, or recency word appears in the text.
  20. absent: No clock time, date, or recency cue such as "now" appears in the text.
  21. absent: No clock time, date, or recency cue appears.
  22. absent: No clock time, date, or recency cue such as "now" or "immediately" appears.
  23. absent: No clock time, date, or recency word like "now" appears.
  24. absent: No clock time, date, or recency cue appears in the text.
  25. absent: No clock time, date, or recency word appears in the text.
• Impactpresent24/25

  Final assessment

  Present. With 24 of 25 agreeing, reads find the directive to remain more than 500 feet away plus this is not a drill implies a serious blast danger; the lone dissent saw no explicit harm 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. present: Says remain clear further than 500 feet and this is not a drill, implying a serious blast danger.
  2. present: Says this is not a drill and to stay more than 500 feet from the building, implying serious danger from a blast.
  3. present: Directs evacuation beyond 500 feet and says this is not a drill, implying a serious blast danger.
  4. present: It instructs evacuation to more than 500 feet and emphasizes this is not a drill, implying a serious blast danger.
  5. present: Directs evacuation to more than 500 feet and says this is not a drill, implying serious danger from the threat.
  6. present: Says to remain more than 500 feet from the building and that this is not a drill, implying real danger.
  7. present: It directs evacuation and staying more than 500 feet away and stresses this is not a drill, implying a serious blast danger.
  8. present: The 500-foot evacuation distance and explicit 'this is not a drill' strongly imply serious explosive danger.
  9. present: The phrase this is not a drill plus a 500-foot clearance for a bomb threat strongly implies serious danger.
  10. present: Tells people to stay 500 feet from the building and says this is not a drill, strongly implying explosive danger.
  11. present: It orders evacuation beyond 500 feet and stresses this is not a drill, strongly implying a serious blast danger.
  12. present: It orders evacuation beyond 500 feet and stresses this is not a drill, implying serious explosive danger.
  13. present: It orders evacuation to more than 500 feet and says this is not a drill, strongly implying a dangerous blast radius.
  14. present: It orders evacuation and a 500-foot clearance stating this is not a drill, implying serious danger from the threat.
  15. present: States this is not a drill and directs clearing 500 feet, strongly implying serious danger from the threat.
  16. absent: Directs evacuation 500 feet away and says this is not a drill but states no explicit harm or consequence.
  17. present: It instructs people to stay further than 500 feet and emphasizes this is not a drill, implying a serious blast danger.
  18. present: It directs evacuation beyond 500 feet and says this is not a drill, implying a serious explosive danger.
  19. present: It tells people to remain clear beyond 500 feet and states this is not a drill, implying serious blast danger.
  20. present: Orders evacuation beyond 500 feet and says this is not a drill, implying serious danger from the threat.
  21. present: It orders staying more than 500 feet from the building and says this is not a drill, strongly implying a dangerous blast radius.
  22. present: The phrase this is not a drill plus a 500-foot evacuation clearly implies a serious danger from the threat.
  23. present: States this is not a drill and a 500-foot clearance, strongly implying a real dangerous blast threat.
  24. present: It orders evacuation beyond 500 feet and says this is not a drill, strongly implying explosive danger.
  25. present: It instructs people to stay more than 500 feet away and says this is not a drill, strongly implying serious danger from the bomb threat.