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The Diary Weather (illustration)
FILE No.113Unsolved

The Diary Weather

Difficulty ★★☆about 5 minTheft CaseDiariesContradictions
The diary says "Sunny; the laundry dried well." It rained all day.

Case Record

As an alibi for the day of the incident, a suspect showed a diary. The entry for that day reads, "Sunny. The laundry dried well. Met a friend in the evening."

But that day it rained all day. The weather station's records confirm it.

Your question

What can be said for certain about this diary?

Case Files

Diagram

The suspect's diary and the weather recordItemDiaryWeather recordWeatherSunnyRain all dayLaundryDried well—EveningMet a friend—
Diagram

Hints

If you get stuck, open the hints one at a time, in order.

Open hint 1

What was the weather that day?

Open hint 2

What weather does the diary say?

Open hint 3

Does it match the facts?

Solve It

Your question

What can be said for certain about this diary?

Choose the answer closest to the truth.

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The Truth

The weather entry does not match the facts

The answer is "The weather entry does not match the facts."

It rained all day. The diary's "Sunny. The laundry dried well" does not match the facts. This lowers trust in the diary as a whole, and the alibi "met a friend in the evening" cannot be believed as it stands.

We cannot say from this alone that meeting a friend was a lie. Whether the suspect went out, or whether the rest of the diary is accurate, cannot be concluded either.

What can and cannot be saidStatusStatementCertainThe diary's weather entry does not match the factsNot certainMeeting the friend was a lieNot certainThe suspect did not go out that dayNot certainThe whole diary is correctThe diary becomes less trustworthy, and the evening alibi cannot beaccepted as it stands.
Diagram of the solution

Key Points

  • Compare the records with each other
  • Stay within what can be said
  • Consider whether it can serve as the basis of an alibi

Why people get fooled

Because you assume a diary is honest.

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