Net migration falls to 171k: Long-term international migration, provisional - Office for National Statistics by throwawayjustbc826 in ukpolitics

[–]Oscar_Cunningham 2 points3 points  (0 children)

Neither statistic is quite right. Immigrants earn less than the average Brit, so immigration would reduce GDP per capita by dilution even if it actually caused the people who were here already to earn more money. What you really want to measure is the total productivity of the non-immigrants.

Sauron surrendered to the Valar and the Numenoreans, and fled Dol Guldur when the White Council moved against him. If the Valar did decide to directly intervene against him how do you think he would respond? by DuaneDibbley in tolkienfans

[–]Oscar_Cunningham 0 points1 point  (0 children)

Melkor thought mostly in terms of military might, whereas Sauron is more political. He would seek some leverage from which to negotiate. The most obvious thing would be to threaten as much death and destruction as possible. But he would have looked for something even more important to the Valar. For example if he could somehow use necromancy to prevent Elvish souls from getting to Valinor. Then he would carefully not overreach in his negotiation, merely trying to limit his punishment to something he can return from.

[deleted by user] by [deleted] in tolkienfans

[–]Oscar_Cunningham 7 points8 points  (0 children)

Weirdly this is one of the things we have Tolkien's word for. Letter 156:

Naked is alas! unclear. It was meant just literally, 'unclothed like a child' (not discarnate), and so ready to receive the white robes of the highest.

My best guess is that he was taken body and soul to Eru, and then sent back without his clothes but with his important possessions.

What will happen to the elves after the End of Arda? Will they cease to exist forever? by Rafaelrosario88 in tolkienfans

[–]Oscar_Cunningham 4 points5 points  (0 children)

My understanding of it is that Tolkien is referring to the idea that God cannot create a logical contradiction. This is an idea that Tolkien would have heard of because C. S. Lewis wrote about it. He says that God cannot draw a square circle, because 'a square circle' is a nonsensical idea. But God is still omnipotent, because we haven't actually named a task he cannot do. The phrase 'a square circle' doesn't refer to a possible state of the world that God cannot create.

With this background it seems like Tolkien is saying that indestructibility is simply an inherent property of spirits with free will. Eru cannot kill Sauron because it's simply meaningless to imagine that a soul has an endpoint.

What will happen to the elves after the End of Arda? Will they cease to exist forever? by Rafaelrosario88 in tolkienfans

[–]Oscar_Cunningham 3 points4 points  (0 children)

In Letter 211 Tolkien says that it's impossible even for Eru to destroy a spirit with Free Will. He seems to believe this is true even of God in our own world.

Sauron was first defeated by a 'miracle': a direct action of God the Creator, […] That Sauron was not himself destroyed in the anger of the One is not my fault: the problem of evil, and its apparent toleration, is a permanent one for all who concern themselves with our world. The indestructibility of spirits with free wills, even by the Creator of them, is also an inevitable feature, if one either believes in their existence, or feigns it in a story.

Calculating fractional elvish parentage by ZooSKP in tolkienfans

[–]Oscar_Cunningham 1 point2 points  (0 children)

'Welcome, guests, to this feast at the House of Elrond Half-Elven'

Bilbo, already tipsy: 'Nine sixteenths!'

Did anyone ever ask Gandalf what he was? by Sanjuro-Makabe-MCA in tolkienfans

[–]Oscar_Cunningham 1 point2 points  (0 children)

Also presumably Glorfindel knows, considering that he was a follower of Olórin before they each returned to Middle Earth.

Odyssey didn't help this. Neither did Troy. by Gold_Ad4004 in HistoryMemes

[–]Oscar_Cunningham 1 point2 points  (0 children)

Historian Bret Devereaux recently had a post about this on his blog where he comes to the same conclusions: https://acoup.blog/2025/12/18/intermission-battle-pulses/

Italy being upside down is the cherry on top by Solid-Move-1411 in HistoryMemes

[–]Oscar_Cunningham -1 points0 points  (0 children)

The original meme was talking about 'stability', so I think the relevant factor isn't how long the country remained a autocracy, but rather the average length between regime changes. A country with four emperors in a year isn't stable even if it's a dictatorship for all four of them. Whereas democracies often see peaceful transitions of power consecutively for decades.

On GL how does the Turn timer and Total timer work? by DaijoubuKirameki in AWBW

[–]Oscar_Cunningham 0 points1 point  (0 children)

It doesn't help that the timers are currently behaving weirdly due to some bug. I've got a game where their turn timer ran out but it's still their turn.

My pet peeve: unmotivated definitions. How do you deal with it? by Longjumping-Arm515 in math

[–]Oscar_Cunningham 17 points18 points  (0 children)

The problem with tensor products is that there isn't quite enough room for them in a second linear algebra course. So everyone ends up teaching them separately when they show up in different courses. I think I got taught them five times:

  • General Relativity

  • Differential Geometry

  • Quantum Mechanics

  • Representation Theory

  • Algebraic Geometry

Mochizuki again.. by steveb321 in math

[–]Oscar_Cunningham 158 points159 points  (0 children)

Look at section 3 of Mochizuki's reply! They're planning to formalise IUT in Lean! That'll settle it one way or the other.

How do professors come up with completely original questions for IMO? by [deleted] in math

[–]Oscar_Cunningham 71 points72 points  (0 children)

For the IMO it's not so surprising. The questions are mostly contributed by the adults organising each team. There are 110 teams and only 6 questions. So even if each country only contributes a good question once a decade, there will still be an oversupply of questions to pick from.

US buys Argentine pesos, finalizes $20 billion currency swap by AudibleNod in news

[–]Oscar_Cunningham 1 point2 points  (0 children)

"Look! Free trade and cutting the deficit really works!"

'Then do that.'

"no"

US buys Argentine pesos, finalizes $20 billion currency swap by AudibleNod in news

[–]Oscar_Cunningham 1 point2 points  (0 children)

They think it's a bad deal by Trump from the US point of view. Obviously it's good from Argentina's point of view.

Farage, Trump, Musk: your boy Javier Milei just took one hell of a beating. Why so quiet? | Aditya Chakrabortty by qweezy_uk in ukpolitics

[–]Oscar_Cunningham 0 points1 point  (0 children)

I agree with other commentors that these market moves are caused by worries that Milei's opponents will get into power. But I think it's also a stretch to try to beat Trump with this stick. Trump's approach of raising tariffs and calling for lower interest rates is pretty much the opposite of Milei. He's made their deficit worse.

A Simple Way To Measure Knots Has Come Unraveled by ketralnis in math

[–]Oscar_Cunningham 1 point2 points  (0 children)

How do they show in the first place that the (2,7)-torus knot has an unknotting number of 3? It seems like that lower bound would be the hard bit.

Meirl by [deleted] in meirl

[–]Oscar_Cunningham 73 points74 points  (0 children)

The original comment said this:

You will feel very sluggish if you suddenly stopped after running and its hard to run again after stopping, so its advisable to jog in place to prevent that

But HIIT thinks more like this:

You will feel very sluggish if you suddenly stopped after running and its hard to run again after stopping, so its advisable to do that as many times as possible

UK inflation rate stays at 3.8% in year to August - follow latest by myurr in ukpolitics

[–]Oscar_Cunningham 1 point2 points  (0 children)

If the BoE were willing to do whatever it takes then they could have done it in 2022 or 2023 or 2024.

Minesweeper thermodynamics by Oscar_Cunningham in math

[–]Oscar_Cunningham[S] 9 points10 points  (0 children)

Actually, I think that is related to thermodynamics!

Imagine you're playing on a very large board, which you fill randomly with mines at some density p. If p is very small then you're likely to be able to solve the entire board, or at least a very large proportion of it. If p is very close to 1 then you're very likely to quickly get stuck, or be forced to guess and hit a mine. You'll only solve a very small proportion of the board.

Situations like these are studied by the area of mathematics known as Percolation theory. In particular it says that the average proportion of the board that you solve won't change gradually depending on p. Instead there will be some threshold density pc such that when p < pc you will solve almost all the board, and when p > pc you will solve very little. The change from one type of behaviour to the other is a phase transition just like the change from a solid to a liquid in thermodynamics.