this post was submitted on 14 May 2025
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No Stupid Questions

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top 16 comments
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[–] tetris11@lemmy.ml 87 points 4 hours ago (2 children)

If you add up all the digits, it sums up to 46, which sums up to 10, which sums up 1, and that's exactly how many shits you should give about this

[–] ChicoSuave@lemmy.world 1 points 5 minutes ago

Who are you, so wise in the ways of maths?

[–] whaleross@lemmy.world 11 points 4 hours ago (1 children)

While applying this technique, the caller may well hang up, so the quandary is solved regardless.

[–] tetris11@lemmy.ml 7 points 3 hours ago (1 children)

See, this is a type of proof that many mathematicians overlook preferring to opt instead for Proof by Contradiction or Proof by Induction. If they just sit and applied Proof by Waiting, they could solve their theorems with 100x less the effort.

This morning I proved Pythagoras's Theorem by employing Proof by Waiting. I waited exactly 5 seconds, and in that time found that it had been proved by a simple online search. Mathemeticians are idiots.

[–] whaleross@lemmy.world 5 points 3 hours ago

Bringing back the absurdum to Reduction Ad Absurdum.

[–] slazer2au@lemmy.world 21 points 3 hours ago

Likely a fake one.

You don't have to have a valid caller id when calling someone. Telcos track call data with other fields.

[–] Libra@lemmy.ml 5 points 2 hours ago

A spoofed one.

[–] Iheartcheese@lemmy.world 27 points 4 hours ago

My guess is some kind of spoofer shenanigans

[–] guy_threepwood@lemmy.world 24 points 5 hours ago (1 children)

If you still have a land line you can dial locally without even an area code. This worked in most countries. Some mobile phone networks kept this tradition although in a weirder way: you could dial locally when physically located in those areas, and your phone would display the area code you were in on the its standby screen. Which worked as long as you weren’t on a border between cells and it picked the wrong one.

Over time this went away.

I don’t think this is what you have experienced, but it was a nice thing that blurred the lines between land line and mobile phones for a little while, and I think it’s interesting.

[–] Quill7513@slrpnk.net 0 points 3 hours ago (1 children)
[–] argh_another_username@lemmy.ca 5 points 3 hours ago (2 children)

Brazil has a stupid numbering system for phones, now. Instead of having three digits area codes and several area codes for highly populated areas, they have two digits area codes and nine digits phone numbers. (But it’s not the case here, here is a scam caller)

[–] Onomatopoeia@lemmy.cafe 1 points 24 minutes ago

But, why?

Seriously, if you understand how this came to be, I'm curious. I'd think they implemented land lines using extant hardware systems of the era, and the number structure surely was well established by that point?

Now I'm off to go down a rabbit hole of telecom implementations worldwide.

[–] Quill7513@slrpnk.net 1 points 3 hours ago

thanks! i was sure there had to be somewhere

[–] lath@lemmy.world 7 points 4 hours ago

My guess would be a (spam) call center landline.

[–] AstralPath@lemmy.ca 2 points 3 hours ago

In Peru (and some islands in the Pacific as well IIRC), some regions have nine digit numbering plans. This may have been a call from one of those areas. More likely its spam.

[–] kaeurennetwo@lemmy.world 3 points 3 hours ago

Honestly, I don't know what kind of number that is either. I usually get calls with country codes that make it easier to guess. How about searching for the number in an identification service to give you a clue as to who that is exactly?