# 53 bicycles:  A lateral thinking puzzle

**URL:** <https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868>\
**Category:** Thread Games\
**Created:** [July 9, 2017, 7:51pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868 "2017-07-09T19:51:32Z")\
**Posts on this page:** 20\
**Page:** 17

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [July 15, 2017, 2:55pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/321 "2017-07-15T14:55:36Z")

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Does the diner have special knowledge that has enabled him to deduce that this was a murder, or could _anyone_ (or a large number of people) have deduced from the article that a murder had occurred?

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**Author:** ![Some\_Call\_Me.Tim](https://avatars.discourse-cdn.com/v4/letter/s/439d5e/32.png) [@Some\_Call\_Me.Tim](https://boards.straightdope.com/u/Some_Call_Me.Tim)\
**Post date:** [July 15, 2017, 2:56pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/322 "2017-07-15T14:56:29Z")

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1. Was the death due to some slow-acting cause that started prior to going to Sea?
2. Upon reading the story, did the reader realize the true identity of the victim was other than what was reported?
3. Prior to reading the story, did the reader mistakenly believe the identity of the victim was other than what the story accurately reported?
4. Prior to reading the story, did the reader believe the victim had already died?
5. Was anyone involved born with an identical twin?
6. Was the murder reported as a suicide?
7. Was the murder reported as an accidental death?
8. Was the murder reported as from natural causes?
9. Are the physical details of the manner of the death important?
10. Did the story accurately report the cause of death? (physically, as in the coroner’s report found the mechanism that caused the death. A narrow definition of ‘cause’ here.)

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**Author:** ![RivkahChaya](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/rivkahchaya/32/8919_2.png) [@RivkahChaya](https://boards.straightdope.com/u/RivkahChaya)\
**Post date:** [July 15, 2017, 2:57pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/323 "2017-07-15T14:57:09Z")

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> [@Riemann](#):
>
> Does the diner have special knowledge that has enabled him to deduce that this was a murder, or could _anyone_ (or a large number of people) have deduced from the article that a murder had occurred?

Ooh. Good question.

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**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\
**Post date:** [July 15, 2017, 3:04pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/324 "2017-07-15T15:04:39Z")

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I think we’ve already established that the death was by drowning. Which is presumably what the coroner’s report said, and which, while it is likely to be significant, is by no means surprising for a death at sea.

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**Author:** ![Some\_Call\_Me.Tim](https://avatars.discourse-cdn.com/v4/letter/s/439d5e/32.png) [@Some\_Call\_Me.Tim](https://boards.straightdope.com/u/Some_Call_Me.Tim)\
**Post date:** [July 15, 2017, 3:11pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/325 "2017-07-15T15:11:03Z")

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Ah, yeah, that does make my first question irrelevant. I don’t see that the distinction between what the death actually was and what the death was _reported as_ has been explored yet, though, so I still think my other questions were worth asking.

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**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\
**Post date:** [July 15, 2017, 3:13pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/326 "2017-07-15T15:13:36Z")

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And I suppose it’s also possible that there was no coroner’s report at all, if the body was not recovered. I doubt it’s significant, but just in case:  
1: Was the body recovered?  
2: Is the answer to that question relevant?

And moving on:  
3: As he was dying, would the dead man have been aware that he was murdered?  
4: If so, would he have known the identity of his murderer?

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**Author:** ![Mahaloth](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mahaloth/32/1079_2.png) [@Mahaloth](https://boards.straightdope.com/u/Mahaloth)\
**Post date:** [July 15, 2017, 3:19pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/327 "2017-07-15T15:19:49Z")

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> [@Riemann](#):
>
> 1. Does the diner have special knowledge that has enabled him to deduce that this was a murder, or 2. could _anyone_ (or a large number of people) have deduced from the article that a murder had occurred?

You asked two questions, so I numbered them.

1. Yes
2. No, though I’m not saying the police won’t figure it all out. I’m just saying not “from the article”.

> [@Some\_Call\_Me.Tim](#):
>
> 1. Was the death due to some slow-acting cause that started prior to going to Sea?
> 2. Upon reading the story, did the reader realize the true identity of the victim was other than what was reported?
> 3. Prior to reading the story, did the reader mistakenly believe the identity of the victim was other than what the story accurately reported?
> 4. Prior to reading the story, did the reader believe the victim had already died?
> 5. Was anyone involved born with an identical twin?
> 6. Was the murder reported as a suicide?
> 7. Was the murder reported as an accidental death?
> 8. Was the murder reported as from natural causes?
> 9. Are the physical details of the manner of the death important?
> 10. Did the story accurately report the cause of death? (physically, as in the coroner’s report found the mechanism that caused the death. A narrow definition of ‘cause’ here.)

1. No.
2. No.
3. No.
4. No.
5. No.
6. No.
7. Yes. Again, it just happened. Certainly an investigation will follow and that forthcoming investigation was probably already beginning.
8. No.
9. They drowned. Otherwise, no.
10. Yes.

> [@Chronos](#):
>
> And I suppose it’s also possible that there was no coroner’s report at all, if the body was not recovered. I doubt it’s significant, but just in case:  
> 1: Was the body recovered?  
> 2: Is the answer to that question relevant?
> 
> And moving on:  
> 3: As he was dying, would the dead man have been aware that he was murdered?  
> 4: If so, would he have known the identity of his murderer?

1. Not in my portion of the story. It just happened.

2. Nope.

3. Yes, the individual knew they were being murdered.

4. Yes.

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**Author:** ![TriPolar](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/tripolar/32/3008_2.png) [@TriPolar](https://boards.straightdope.com/u/TriPolar)\
**Post date:** [July 15, 2017, 3:22pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/328 "2017-07-15T15:22:52Z")

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Is the dead man a man? In other words, is it a woman who died?

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**Author:** ![Some\_Call\_Me.Tim](https://avatars.discourse-cdn.com/v4/letter/s/439d5e/32.png) [@Some\_Call\_Me.Tim](https://boards.straightdope.com/u/Some_Call_Me.Tim)\
**Post date:** [July 15, 2017, 3:27pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/329 "2017-07-15T15:27:20Z")

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I’m not sure if this is a singular they pronoun confusion, but…

1. Did the story report that more than one person died?
2. Were all of the reported deaths murders?
3. Was this a murder/suicide that appeared to be two accidental deaths?

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**Author:** ![Ignotus](https://avatars.discourse-cdn.com/v4/letter/i/ecc23a/32.png) [@Ignotus](https://boards.straightdope.com/u/Ignotus)\
**Post date:** [July 15, 2017, 4:04pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/330 "2017-07-15T16:04:26Z")

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1. Does the reader know the reason for the murder?

2. Is the reason for the murder relevant at all?

3. Is the fact that the death occurred at sea/by drowning relevant?

4. If the article instead had been, say “Dead in car accident” and mentioned the victim’s name, would the reader still have had reason to suspect murder?

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**Author:** ![Mahaloth](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mahaloth/32/1079_2.png) [@Mahaloth](https://boards.straightdope.com/u/Mahaloth)\
**Post date:** [July 15, 2017, 4:32pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/331 "2017-07-15T16:32:29Z")

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> [@TriPolar](#):
>
> Is the dead man a man? In other words, is it a woman who died?

It’s a woman.

> [@Some\_Call\_Me.Tim](#):
>
> I’m not sure if this is a singular they pronoun confusion, but…
> 
> 1. Did the story report that more than one person died?
> 2. Were all of the reported deaths murders?
> 3. Was this a murder/suicide that appeared to be two accidental deaths?

1. No.
2. Yes.
3. No.

> [@Ignotus](#):
>
> 1. Does the reader know the reason for the murder?
> 
> 2. Is the reason for the murder relevant at all?
> 
> 3. Is the fact that the death occurred at sea/by drowning relevant?
> 
> 4. If the article instead had been, say “Dead in car accident” and mentioned the victim’s name, would the reader still have had reason to suspect murder?

1. No.
2. No.
3. Yes, it certainly drew the reader’s attention.
4. No.

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**Author:** ![Some\_Call\_Me.Tim](https://avatars.discourse-cdn.com/v4/letter/s/439d5e/32.png) [@Some\_Call\_Me.Tim](https://boards.straightdope.com/u/Some_Call_Me.Tim)\
**Post date:** [July 15, 2017, 4:43pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/332 "2017-07-15T16:43:32Z")

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1. Was the victim normally able to breathe water? (Was she a mermaid, fish, cybernetically enhanced, etc?)
2. Was everyone involved human?

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<div class="post-metadata">

**Author:** ![Mahaloth](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mahaloth/32/1079_2.png) [@Mahaloth](https://boards.straightdope.com/u/Mahaloth)\
**Post date:** [July 15, 2017, 4:49pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/333 "2017-07-15T16:49:48Z")

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> [@Some\_Call\_Me.Tim](#):
>
> 1. Was the victim normally able to breathe water? (Was she a mermaid, fish, cybernetically enhanced, etc?)
> 2. Was everyone involved human?

1. No.
2. Yes.

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<div class="post-metadata">

**Author:** ![RivkahChaya](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/rivkahchaya/32/8919_2.png) [@RivkahChaya](https://boards.straightdope.com/u/RivkahChaya)\
**Post date:** [July 15, 2017, 5:25pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/334 "2017-07-15T17:25:23Z")

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In sum, we have two people, I’m guessing a married couple, but could be a brother and sister, mother and child, anyway, one was definitely a woman, the other we have not established, but I think we’ve been saying “he.” The diner does not know the murderer, but had some brief interaction with him that imparted some knowledge that caused him to realize that what appeared to be an accident at sea was a murder.

1. Is that a fair summation?

2. Is the diner a lawyer?

3. If not 2, is the diner a psychiatrist?

4. If not 2 or 3, is the diner a priest?

5. Is the diner’s profession in any way involved in this special knowledge?

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<div class="post-metadata">

**Author:** ![TriPolar](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/tripolar/32/3008_2.png) [@TriPolar](https://boards.straightdope.com/u/TriPolar)\
**Post date:** [July 15, 2017, 5:50pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/335 "2017-07-15T17:50:50Z")

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Is the diner related by marriage to the dead woman?

ETA:

Is the diner a doctor? If yes, is he a medical doctor of some type (including dentists, chiropracters, etc)?

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<div class="post-metadata">

**Author:** ![Mahaloth](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mahaloth/32/1079_2.png) [@Mahaloth](https://boards.straightdope.com/u/Mahaloth)\
**Post date:** [July 15, 2017, 6:02pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/336 "2017-07-15T18:02:15Z")

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> [@RivkahChaya](#):
>
> In sum, we have two people, I’m guessing a married couple, but could be a brother and sister, mother and child, anyway, one was definitely a woman, the other we have not established, but I think we’ve been saying “he.” The diner does not know the murderer, but had some brief interaction with him that imparted some knowledge that caused him to realize that what appeared to be an accident at sea was a murder.
> 
> 1. Is that a fair summation?
> 
> 2. Is the diner a lawyer?
> 
> 3. If not 2, is the diner a psychiatrist?
> 
> 4. If not 2 or 3, is the diner a priest?
> 
> 5. Is the diner’s profession in any way involved in this special knowledge?

1. Yes.

2. No.

3. No.

4. No.

5. Yes and good question.

> [@TriPolar](#):
>
> 1. Is the diner related by marriage to the dead woman?
> 
> ETA:
> 
> 1. Is the diner a doctor? If yes, is he a medical doctor of some type (including dentists, chiropracters, etc)?

1. No. Not related to the murderer or victim.

2. No.

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<div class="post-metadata">

**Author:** ![Left\_Hand\_of\_Dorkness](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/left_hand_of_dorkness/32/7156_2.png) [@Left\_Hand\_of\_Dorkness](https://boards.straightdope.com/u/Left_Hand_of_Dorkness)\
**Post date:** [July 15, 2017, 6:31pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/337 "2017-07-15T18:31:18Z")

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1. Is the murderer married to the victim?
2. Is the murderer the victim’s parent?
3. Is the murderer the victim’s child?
4. Is the murderer the victim’s sibling?

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<div class="post-metadata">

**Author:** ![Left\_Hand\_of\_Dorkness](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/left_hand_of_dorkness/32/7156_2.png) [@Left\_Hand\_of\_Dorkness](https://boards.straightdope.com/u/Left_Hand_of_Dorkness)\
**Post date:** [July 15, 2017, 6:35pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/338 "2017-07-15T18:35:03Z")

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Wait a second, I may have heard this before, so I’m going to put an answer in spoilers. I may not have heard it–can’t remember for sure.

Does it involve purchasing two tickets, one is round-trip for the murderer, and the other is one-way for the victim?

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<div class="post-metadata">

**Author:** ![Mahaloth](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mahaloth/32/1079_2.png) [@Mahaloth](https://boards.straightdope.com/u/Mahaloth)\
**Post date:** [July 15, 2017, 6:39pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/339 "2017-07-15T18:39:00Z")

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> [@Left\_Hand\_of\_Dorkness](#):
>
> 1. Is the murderer married to the victim?
> 2. Is the murderer the victim’s parent?
> 3. Is the murderer the victim’s child?
> 4. Is the murderer the victim’s sibling?

1. Yes.
2. no.
3. no.
4. no.

> [@Left\_Hand\_of\_Dorkness](#):
>
> Wait a second, I may have heard this before, so I’m going to put an answer in spoilers. I may not have heard it–can’t remember for sure.
> 
> Does it involve purchasing two tickets, one is round-trip for the murderer, and the other is one-way for the victim?

You have heard it before. The answer is now out there in spoiler-box form, folks!

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<div class="post-metadata">

**Author:** ![RivkahChaya](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/rivkahchaya/32/8919_2.png) [@RivkahChaya](https://boards.straightdope.com/u/RivkahChaya)\
**Post date:** [July 15, 2017, 6:46pm UTC](https://boards.straightdope.com/t/53-bicycles-a-lateral-thinking-puzzle/790868/340 "2017-07-15T18:46:08Z")

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I read the spoiler: now I’m guessing that the diner sold the tickets. I don’t think there’s any way I would have narrowed it down to that from “the diner’s profession imparted special knowledge,” so I’m satisfied.

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