Today I Learned

[DaveC426913]

Yes it is!
Just ask a civilization...
What base that you use?
They will answer:
10

D'oh!!

 

[Orodruin]

They will answer:
10!

375F00
???

 

[DrGreg]

They will answer:
10

To give an unambiguous answer, I suppose you'd need to say, e.g.

• 1+1 (binary)
• 9+1 (decimal)
• F+1 (hex)

etc

 

[KingGambit]

Sheldon number.
In the series The Big Bang theory, Sheldon's favorite number is 73

Because (in base 10), this number has certain property.
1. 73 is prime
2. It's reverse: 37 is also prime.
3. 73 is the 21st prime.
4. 37 is the 12th prime.
5. It's digit product 7 * 3 is also 21 (see property 3)

So, does 73 (in base 10) is the only number who have this property?
What about other number in base 10?
What about other number in any other base?

Here, I try to find any prime numbers in any other base who have this property. But, I can only find 73 in base 10.

I've searched up until base 2000. Larger than this, it would take more programming effort to conserve memories and speed up process. I just write this software in 1 hour. Perhaps any mathematicians here can prove that only 73 and in base 10 number that has this property. That there's no other possibilty in any other base. Just like 1089 problem above.
This 1089 works in any base number.

 

[jtbell]

Today I learned that Fallingwater is leaking.

 

[Hornbein]

TIL that Captain James Cook had no middle name. I was hoping it would be James T. Cook.

Harry Truman's middle name was S, but I already knew that.

 

[BillTre]

I read about someone who had a middle initial (S) but no middle name.
The story was that a spaghetti noodle landed on the form.

 

[Janus]

TIL that Captain James Cook had no middle name. I was hoping it would be James T. Cook.

Harry Truman's middle name was S, but I already knew that.

My dad didn't have a middle name. While his four eldest brothers were given middle names, the next four, including my dad, who was the youngest, weren't.

 

[KingGambit]

TIL that Captain James Cook had no middle name. I was hoping it would be James T. Cook.

Harry Truman's middle name was S, but I already knew that.

John Fitzgerald Kennedy
Ronald Wilson Reagan
George Herbert Bush
George Walker Bush
Barrack Husein Obama, etc...

Once someone asked Truman, what is S?
Truman: Secret

 

[Rive]

TIL that you need to choose your shoes very carefully when preparing for a hand (wrist) surgery.

You can get the whole surgery with some 'Ouch! That stung bit', but then the lidocaine is out and what awaits you is a battle with the shoelaces...

 

[Rive]

TIL that sometimes even feeding the cat can feel like an accomplishment.

Also: apart from the thing about the shoes, if it's about your 'main' hand, then get an electric toothbrush as preparation.

It is a quite strange experience with only the 'other' hand.
All is good and things goes as expected so far: these are just the small strange things which slipped through the preparations.

 

[gmax137]

TIL: "revise" is one of those words whose definition differs across the pond

revise: verb
1. re-examine and make alterations to (written or printed matter):
"the book was published in 1960 and revised in 1968"

2. BRITISH ENGLISH
reread work done previously to improve one's knowledge of a subject, typically to prepare for an examination:
"students frantically revising for exams" · "revise your lecture notes on the topic"

 

[fresh_42]

TIL: "revise" is one of those words whose definition differs across the pond

revise: verb
1. re-examine and make alterations to (written or printed matter):
"the book was published in 1960 and revised in 1968"

2. BRITISH ENGLISH
reread work done previously to improve one's knowledge of a subject, typically to prepare for an examination:
"students frantically revising for exams" · "revise your lecture notes on the topic"

I think the British version is closer to its literal meaning: see-again. I would use review in the first case, not knowing why this is also see-again.

We say "revue (fr.) passieren lassen" in the second case (let a review happen) and "revidiert" in the first case. Wherever and how ever you look at it: it remains a re-look.

 

[gmax137]

I would use review in the first case

As a born-USA speaker, I would use "revise" in the first case and "review" in the second case.

 

[symbolipoint]

As a born-USA speaker, I would use "revise" in the first case and "review" in the second case.

Depending how is your background, "revise" means to re-examine and then update something. OFTEN but not restricted to books, especially academic textbooks. Those might be called "Editions"; not absolutely sure. Documents shorter than things like textbooks would be said to have "revisions".

 

[Hornbein]

TIL that a sojourner is "a temporary resident."

 

[Borg]

TIL that I might not have to manually parse and load documents for my LLM Agents!
https://docs.llamaindex.ai/en/stable/examples/agent/react_agent_with_query_engine/

 

[Hornbein]

TIL that I might not have to manually parse and load documents for my LLM Agents!
https://docs.llamaindex.ai/en/stable/examples/agent/react_agent_with_query_engine/

That is Greek to me.

 

[Demystifier]

"Neil Armstrong" backwards is "Gnorts, Mr Alien".

 

[Ibix]

I hope "gnorts" means something polite like "hello" in alienese.

 

[symbolipoint]

Due to #6289 and #6290,
Quick! Everybody let's spell our names backwards and see what we get!

 

[DaveC426913]

Due to #6289 and #6290,
Quick! Everybody let's spell our names backwards and see what we get!

Old news. I think I was about nine when I first starting saying my name backwards.

 

[PeterDonis]

Old news. I think I was about nine when I first starting saying my name backwards.

I was younger than that--first grade. I remember because I particularly disliked my first grade teacher and I would say my name backwards to annoy her.

 

[Ibix]

Due to #6289 and #6290,
Quick! Everybody let's spell our names backwards and see what we get!

Three guesses what was the name of one of the original makers of Trebor Mints, and the first two don't count.

 

[DrGreg]

Everybody let's spell our names backwards and see what we get!

Alucard?

 

[fresh_42]

Alucard?

You mean Lucard Dalv?

 

[jack action]

I was also writing backwards in my younger years:

 

[dlgoff]

My youngest daughter use to say words backwards.

 

[fresh_42]

My youngest daughter use to say words backwards.

.uɐǝɯ noʎ ʇɐɥʍ ʍouʞ I

 

[DaveC426913]

I was also writing backwards in my younger years:

View attachment 358202​

When I first saw the film in a repertory theater, it was during this scene that the kid sitting behind me said, in a loud stage whisper "READ IT BACKWARD!"