Sally's older brother
$begingroup$
Sally smiles at her older brother and says, "Happy 30th birthday!"
He shakes his head and replies, "I'm not 30 yet, but you are!"
How is this possible?
lateral-thinking story
$endgroup$
add a comment |
$begingroup$
Sally smiles at her older brother and says, "Happy 30th birthday!"
He shakes his head and replies, "I'm not 30 yet, but you are!"
How is this possible?
lateral-thinking story
$endgroup$
add a comment |
$begingroup$
Sally smiles at her older brother and says, "Happy 30th birthday!"
He shakes his head and replies, "I'm not 30 yet, but you are!"
How is this possible?
lateral-thinking story
$endgroup$
Sally smiles at her older brother and says, "Happy 30th birthday!"
He shakes his head and replies, "I'm not 30 yet, but you are!"
How is this possible?
lateral-thinking story
lateral-thinking story
edited 2 days ago
Brandon_J
3,848447
3,848447
asked Apr 20 at 9:00
rybo111rybo111
2,11621742
2,11621742
add a comment |
add a comment |
6 Answers
6
active
oldest
votes
$begingroup$
They are
twins, and the brother was born earlier than Sally on the same day.
They are located on different time zones, either talking via video call or simply standing on different sides of a border between two time zones.
It is already their birthday on Sally's time zone, but not yet on the brother's time zone.
$endgroup$
$begingroup$
(+1): I had the same thing in mind!
$endgroup$
– user477343
Apr 20 at 9:17
add a comment |
$begingroup$
Sally's older brother has evidently been travelling in two distinct inertial reference frames.
New contributor
$endgroup$
2
$begingroup$
Best answer. The other responses rely on debatable pedantry but this one is pure physics.
$endgroup$
– afeique
Apr 20 at 15:18
4
$begingroup$
@afeique Definitely not - the reference frames do not need to be inertial; moreover, for the siblings to have anything like meaningful realtime conversation, the frames cannot be inertial the whole time.
$endgroup$
– Radovan Garabík
Apr 20 at 19:37
2
$begingroup$
It seems to work. Traveling in two distinct inertial frames implies that there was a change of reference frame that was not inertial.
$endgroup$
– Jay
Apr 21 at 4:14
$begingroup$
Or maybe he's been orbiting a supermassive black hole.
$endgroup$
– n00dles
Apr 21 at 21:50
add a comment |
$begingroup$
Maybe
he was born on Feb 29th, Leap Day and so has had about 1/4 the number of birthday's you would expect he's had.
Or if we want to be more legal...
They are twins born on Feb 29th (he was born first) and this is a non-leap year and Feb 28th. He is somewhere that considers March 1 as his official birthday (UK for example) and she is somewhere that considers Feb 28th as her official birthday (New Zealand or Taiwan, for example)
$endgroup$
$begingroup$
I did consider that, but from a legal standpoint would "I'm not 30 yet" be false?
$endgroup$
– rybo111
Apr 20 at 10:29
$begingroup$
Not sure, but it is the premise of Gilbert and Sullivan's "The Pirates of Penzance"!
$endgroup$
– SteveV
Apr 20 at 14:56
$begingroup$
@SteveV IIRC, Gilbert and Sullivan very carefully worded it as "his 21st Birthday", and not "21 years old"
$endgroup$
– Chronocidal
Apr 20 at 16:01
add a comment |
$begingroup$
Try mine
Sally and her older brother are actually twins, their mother were in a cruise while labouring those two, the older brother came out first while in the 1st of March side of the Pacific Ocean, while she was born in the 28th February side of the ocean. I found the answer here.
$endgroup$
add a comment |
$begingroup$
Two different answers:
1)
They are Korean, and he got a European or USA citizenship and is making a point by reminding her the age reckoning is different (though strictly speaking, she would not be speaking of 30th birthday, but of "being 30 year old")
2)
Very easy. Why wouldn't this be possible? People often say things that are not true. E.g. making simple mistakes when intoxicated after a birthday celebration, or just unsuccessfully trying to be funny or just pointing out he is feeling younger...
$endgroup$
add a comment |
$begingroup$
the answer is:
Sally has two brothers
a younger brother who is 26 and an older brother who is 28.
Sally says: “Hi, have you met my two kid brothers? Let me introduce my younger brother Adam and my older brother Brian”. She smiles at her older brother.
New contributor
$endgroup$
$begingroup$
she smiles at her older brother....
$endgroup$
– Radovan Garabík
2 days ago
add a comment |
Your Answer
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6 Answers
6
active
oldest
votes
6 Answers
6
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
They are
twins, and the brother was born earlier than Sally on the same day.
They are located on different time zones, either talking via video call or simply standing on different sides of a border between two time zones.
It is already their birthday on Sally's time zone, but not yet on the brother's time zone.
$endgroup$
$begingroup$
(+1): I had the same thing in mind!
$endgroup$
– user477343
Apr 20 at 9:17
add a comment |
$begingroup$
They are
twins, and the brother was born earlier than Sally on the same day.
They are located on different time zones, either talking via video call or simply standing on different sides of a border between two time zones.
It is already their birthday on Sally's time zone, but not yet on the brother's time zone.
$endgroup$
$begingroup$
(+1): I had the same thing in mind!
$endgroup$
– user477343
Apr 20 at 9:17
add a comment |
$begingroup$
They are
twins, and the brother was born earlier than Sally on the same day.
They are located on different time zones, either talking via video call or simply standing on different sides of a border between two time zones.
It is already their birthday on Sally's time zone, but not yet on the brother's time zone.
$endgroup$
They are
twins, and the brother was born earlier than Sally on the same day.
They are located on different time zones, either talking via video call or simply standing on different sides of a border between two time zones.
It is already their birthday on Sally's time zone, but not yet on the brother's time zone.
answered Apr 20 at 9:15
jafejafe
26.8k478265
26.8k478265
$begingroup$
(+1): I had the same thing in mind!
$endgroup$
– user477343
Apr 20 at 9:17
add a comment |
$begingroup$
(+1): I had the same thing in mind!
$endgroup$
– user477343
Apr 20 at 9:17
$begingroup$
(+1): I had the same thing in mind!
$endgroup$
– user477343
Apr 20 at 9:17
$begingroup$
(+1): I had the same thing in mind!
$endgroup$
– user477343
Apr 20 at 9:17
add a comment |
$begingroup$
Sally's older brother has evidently been travelling in two distinct inertial reference frames.
New contributor
$endgroup$
2
$begingroup$
Best answer. The other responses rely on debatable pedantry but this one is pure physics.
$endgroup$
– afeique
Apr 20 at 15:18
4
$begingroup$
@afeique Definitely not - the reference frames do not need to be inertial; moreover, for the siblings to have anything like meaningful realtime conversation, the frames cannot be inertial the whole time.
$endgroup$
– Radovan Garabík
Apr 20 at 19:37
2
$begingroup$
It seems to work. Traveling in two distinct inertial frames implies that there was a change of reference frame that was not inertial.
$endgroup$
– Jay
Apr 21 at 4:14
$begingroup$
Or maybe he's been orbiting a supermassive black hole.
$endgroup$
– n00dles
Apr 21 at 21:50
add a comment |
$begingroup$
Sally's older brother has evidently been travelling in two distinct inertial reference frames.
New contributor
$endgroup$
2
$begingroup$
Best answer. The other responses rely on debatable pedantry but this one is pure physics.
$endgroup$
– afeique
Apr 20 at 15:18
4
$begingroup$
@afeique Definitely not - the reference frames do not need to be inertial; moreover, for the siblings to have anything like meaningful realtime conversation, the frames cannot be inertial the whole time.
$endgroup$
– Radovan Garabík
Apr 20 at 19:37
2
$begingroup$
It seems to work. Traveling in two distinct inertial frames implies that there was a change of reference frame that was not inertial.
$endgroup$
– Jay
Apr 21 at 4:14
$begingroup$
Or maybe he's been orbiting a supermassive black hole.
$endgroup$
– n00dles
Apr 21 at 21:50
add a comment |
$begingroup$
Sally's older brother has evidently been travelling in two distinct inertial reference frames.
New contributor
$endgroup$
Sally's older brother has evidently been travelling in two distinct inertial reference frames.
New contributor
New contributor
answered Apr 20 at 12:18
anthusanthus
1794
1794
New contributor
New contributor
2
$begingroup$
Best answer. The other responses rely on debatable pedantry but this one is pure physics.
$endgroup$
– afeique
Apr 20 at 15:18
4
$begingroup$
@afeique Definitely not - the reference frames do not need to be inertial; moreover, for the siblings to have anything like meaningful realtime conversation, the frames cannot be inertial the whole time.
$endgroup$
– Radovan Garabík
Apr 20 at 19:37
2
$begingroup$
It seems to work. Traveling in two distinct inertial frames implies that there was a change of reference frame that was not inertial.
$endgroup$
– Jay
Apr 21 at 4:14
$begingroup$
Or maybe he's been orbiting a supermassive black hole.
$endgroup$
– n00dles
Apr 21 at 21:50
add a comment |
2
$begingroup$
Best answer. The other responses rely on debatable pedantry but this one is pure physics.
$endgroup$
– afeique
Apr 20 at 15:18
4
$begingroup$
@afeique Definitely not - the reference frames do not need to be inertial; moreover, for the siblings to have anything like meaningful realtime conversation, the frames cannot be inertial the whole time.
$endgroup$
– Radovan Garabík
Apr 20 at 19:37
2
$begingroup$
It seems to work. Traveling in two distinct inertial frames implies that there was a change of reference frame that was not inertial.
$endgroup$
– Jay
Apr 21 at 4:14
$begingroup$
Or maybe he's been orbiting a supermassive black hole.
$endgroup$
– n00dles
Apr 21 at 21:50
2
2
$begingroup$
Best answer. The other responses rely on debatable pedantry but this one is pure physics.
$endgroup$
– afeique
Apr 20 at 15:18
$begingroup$
Best answer. The other responses rely on debatable pedantry but this one is pure physics.
$endgroup$
– afeique
Apr 20 at 15:18
4
4
$begingroup$
@afeique Definitely not - the reference frames do not need to be inertial; moreover, for the siblings to have anything like meaningful realtime conversation, the frames cannot be inertial the whole time.
$endgroup$
– Radovan Garabík
Apr 20 at 19:37
$begingroup$
@afeique Definitely not - the reference frames do not need to be inertial; moreover, for the siblings to have anything like meaningful realtime conversation, the frames cannot be inertial the whole time.
$endgroup$
– Radovan Garabík
Apr 20 at 19:37
2
2
$begingroup$
It seems to work. Traveling in two distinct inertial frames implies that there was a change of reference frame that was not inertial.
$endgroup$
– Jay
Apr 21 at 4:14
$begingroup$
It seems to work. Traveling in two distinct inertial frames implies that there was a change of reference frame that was not inertial.
$endgroup$
– Jay
Apr 21 at 4:14
$begingroup$
Or maybe he's been orbiting a supermassive black hole.
$endgroup$
– n00dles
Apr 21 at 21:50
$begingroup$
Or maybe he's been orbiting a supermassive black hole.
$endgroup$
– n00dles
Apr 21 at 21:50
add a comment |
$begingroup$
Maybe
he was born on Feb 29th, Leap Day and so has had about 1/4 the number of birthday's you would expect he's had.
Or if we want to be more legal...
They are twins born on Feb 29th (he was born first) and this is a non-leap year and Feb 28th. He is somewhere that considers March 1 as his official birthday (UK for example) and she is somewhere that considers Feb 28th as her official birthday (New Zealand or Taiwan, for example)
$endgroup$
$begingroup$
I did consider that, but from a legal standpoint would "I'm not 30 yet" be false?
$endgroup$
– rybo111
Apr 20 at 10:29
$begingroup$
Not sure, but it is the premise of Gilbert and Sullivan's "The Pirates of Penzance"!
$endgroup$
– SteveV
Apr 20 at 14:56
$begingroup$
@SteveV IIRC, Gilbert and Sullivan very carefully worded it as "his 21st Birthday", and not "21 years old"
$endgroup$
– Chronocidal
Apr 20 at 16:01
add a comment |
$begingroup$
Maybe
he was born on Feb 29th, Leap Day and so has had about 1/4 the number of birthday's you would expect he's had.
Or if we want to be more legal...
They are twins born on Feb 29th (he was born first) and this is a non-leap year and Feb 28th. He is somewhere that considers March 1 as his official birthday (UK for example) and she is somewhere that considers Feb 28th as her official birthday (New Zealand or Taiwan, for example)
$endgroup$
$begingroup$
I did consider that, but from a legal standpoint would "I'm not 30 yet" be false?
$endgroup$
– rybo111
Apr 20 at 10:29
$begingroup$
Not sure, but it is the premise of Gilbert and Sullivan's "The Pirates of Penzance"!
$endgroup$
– SteveV
Apr 20 at 14:56
$begingroup$
@SteveV IIRC, Gilbert and Sullivan very carefully worded it as "his 21st Birthday", and not "21 years old"
$endgroup$
– Chronocidal
Apr 20 at 16:01
add a comment |
$begingroup$
Maybe
he was born on Feb 29th, Leap Day and so has had about 1/4 the number of birthday's you would expect he's had.
Or if we want to be more legal...
They are twins born on Feb 29th (he was born first) and this is a non-leap year and Feb 28th. He is somewhere that considers March 1 as his official birthday (UK for example) and she is somewhere that considers Feb 28th as her official birthday (New Zealand or Taiwan, for example)
$endgroup$
Maybe
he was born on Feb 29th, Leap Day and so has had about 1/4 the number of birthday's you would expect he's had.
Or if we want to be more legal...
They are twins born on Feb 29th (he was born first) and this is a non-leap year and Feb 28th. He is somewhere that considers March 1 as his official birthday (UK for example) and she is somewhere that considers Feb 28th as her official birthday (New Zealand or Taiwan, for example)
edited Apr 21 at 0:27
answered Apr 20 at 9:57
SteveVSteveV
6,7782634
6,7782634
$begingroup$
I did consider that, but from a legal standpoint would "I'm not 30 yet" be false?
$endgroup$
– rybo111
Apr 20 at 10:29
$begingroup$
Not sure, but it is the premise of Gilbert and Sullivan's "The Pirates of Penzance"!
$endgroup$
– SteveV
Apr 20 at 14:56
$begingroup$
@SteveV IIRC, Gilbert and Sullivan very carefully worded it as "his 21st Birthday", and not "21 years old"
$endgroup$
– Chronocidal
Apr 20 at 16:01
add a comment |
$begingroup$
I did consider that, but from a legal standpoint would "I'm not 30 yet" be false?
$endgroup$
– rybo111
Apr 20 at 10:29
$begingroup$
Not sure, but it is the premise of Gilbert and Sullivan's "The Pirates of Penzance"!
$endgroup$
– SteveV
Apr 20 at 14:56
$begingroup$
@SteveV IIRC, Gilbert and Sullivan very carefully worded it as "his 21st Birthday", and not "21 years old"
$endgroup$
– Chronocidal
Apr 20 at 16:01
$begingroup$
I did consider that, but from a legal standpoint would "I'm not 30 yet" be false?
$endgroup$
– rybo111
Apr 20 at 10:29
$begingroup$
I did consider that, but from a legal standpoint would "I'm not 30 yet" be false?
$endgroup$
– rybo111
Apr 20 at 10:29
$begingroup$
Not sure, but it is the premise of Gilbert and Sullivan's "The Pirates of Penzance"!
$endgroup$
– SteveV
Apr 20 at 14:56
$begingroup$
Not sure, but it is the premise of Gilbert and Sullivan's "The Pirates of Penzance"!
$endgroup$
– SteveV
Apr 20 at 14:56
$begingroup$
@SteveV IIRC, Gilbert and Sullivan very carefully worded it as "his 21st Birthday", and not "21 years old"
$endgroup$
– Chronocidal
Apr 20 at 16:01
$begingroup$
@SteveV IIRC, Gilbert and Sullivan very carefully worded it as "his 21st Birthday", and not "21 years old"
$endgroup$
– Chronocidal
Apr 20 at 16:01
add a comment |
$begingroup$
Try mine
Sally and her older brother are actually twins, their mother were in a cruise while labouring those two, the older brother came out first while in the 1st of March side of the Pacific Ocean, while she was born in the 28th February side of the ocean. I found the answer here.
$endgroup$
add a comment |
$begingroup$
Try mine
Sally and her older brother are actually twins, their mother were in a cruise while labouring those two, the older brother came out first while in the 1st of March side of the Pacific Ocean, while she was born in the 28th February side of the ocean. I found the answer here.
$endgroup$
add a comment |
$begingroup$
Try mine
Sally and her older brother are actually twins, their mother were in a cruise while labouring those two, the older brother came out first while in the 1st of March side of the Pacific Ocean, while she was born in the 28th February side of the ocean. I found the answer here.
$endgroup$
Try mine
Sally and her older brother are actually twins, their mother were in a cruise while labouring those two, the older brother came out first while in the 1st of March side of the Pacific Ocean, while she was born in the 28th February side of the ocean. I found the answer here.
answered Apr 21 at 13:08
Casablanca KookieCasablanca Kookie
1945
1945
add a comment |
add a comment |
$begingroup$
Two different answers:
1)
They are Korean, and he got a European or USA citizenship and is making a point by reminding her the age reckoning is different (though strictly speaking, she would not be speaking of 30th birthday, but of "being 30 year old")
2)
Very easy. Why wouldn't this be possible? People often say things that are not true. E.g. making simple mistakes when intoxicated after a birthday celebration, or just unsuccessfully trying to be funny or just pointing out he is feeling younger...
$endgroup$
add a comment |
$begingroup$
Two different answers:
1)
They are Korean, and he got a European or USA citizenship and is making a point by reminding her the age reckoning is different (though strictly speaking, she would not be speaking of 30th birthday, but of "being 30 year old")
2)
Very easy. Why wouldn't this be possible? People often say things that are not true. E.g. making simple mistakes when intoxicated after a birthday celebration, or just unsuccessfully trying to be funny or just pointing out he is feeling younger...
$endgroup$
add a comment |
$begingroup$
Two different answers:
1)
They are Korean, and he got a European or USA citizenship and is making a point by reminding her the age reckoning is different (though strictly speaking, she would not be speaking of 30th birthday, but of "being 30 year old")
2)
Very easy. Why wouldn't this be possible? People often say things that are not true. E.g. making simple mistakes when intoxicated after a birthday celebration, or just unsuccessfully trying to be funny or just pointing out he is feeling younger...
$endgroup$
Two different answers:
1)
They are Korean, and he got a European or USA citizenship and is making a point by reminding her the age reckoning is different (though strictly speaking, she would not be speaking of 30th birthday, but of "being 30 year old")
2)
Very easy. Why wouldn't this be possible? People often say things that are not true. E.g. making simple mistakes when intoxicated after a birthday celebration, or just unsuccessfully trying to be funny or just pointing out he is feeling younger...
answered Apr 20 at 19:53
Radovan GarabíkRadovan Garabík
2,5371519
2,5371519
add a comment |
add a comment |
$begingroup$
the answer is:
Sally has two brothers
a younger brother who is 26 and an older brother who is 28.
Sally says: “Hi, have you met my two kid brothers? Let me introduce my younger brother Adam and my older brother Brian”. She smiles at her older brother.
New contributor
$endgroup$
$begingroup$
she smiles at her older brother....
$endgroup$
– Radovan Garabík
2 days ago
add a comment |
$begingroup$
the answer is:
Sally has two brothers
a younger brother who is 26 and an older brother who is 28.
Sally says: “Hi, have you met my two kid brothers? Let me introduce my younger brother Adam and my older brother Brian”. She smiles at her older brother.
New contributor
$endgroup$
$begingroup$
she smiles at her older brother....
$endgroup$
– Radovan Garabík
2 days ago
add a comment |
$begingroup$
the answer is:
Sally has two brothers
a younger brother who is 26 and an older brother who is 28.
Sally says: “Hi, have you met my two kid brothers? Let me introduce my younger brother Adam and my older brother Brian”. She smiles at her older brother.
New contributor
$endgroup$
the answer is:
Sally has two brothers
a younger brother who is 26 and an older brother who is 28.
Sally says: “Hi, have you met my two kid brothers? Let me introduce my younger brother Adam and my older brother Brian”. She smiles at her older brother.
New contributor
edited yesterday
MichaelMaggs
31
31
New contributor
answered Apr 21 at 22:39
MichaelMichael
112
112
New contributor
New contributor
$begingroup$
she smiles at her older brother....
$endgroup$
– Radovan Garabík
2 days ago
add a comment |
$begingroup$
she smiles at her older brother....
$endgroup$
– Radovan Garabík
2 days ago
$begingroup$
she smiles at her older brother....
$endgroup$
– Radovan Garabík
2 days ago
$begingroup$
she smiles at her older brother....
$endgroup$
– Radovan Garabík
2 days ago
add a comment |
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