All of Good_Burning_Plastic's Comments + Replies

A mysterious but trustworthy agent named "Laplace's Demon" has recently appeared, and informed everyone that, to a first approximation, the world is currently in one of seven possible quantum states.

What is the word "quantum" doing there? Repeat with me: Quantum superpositions are not about epistemic uncertainty! Quantum superpositions are not about epistemic uncertainty! Quantum superpositions are not about epistemic uncertainty!

The following rules are stipulated: There are four possible outcomes, either "Hillary elected and US Nuked", "Hillary elected and US not nuked", "Jeb elected and US nuked", "Jeb elected and US not nuked". Participants in the market can buy and sell contracts for each of those outcomes, the contract which correponds to the actual outcome will expire at $100, all other contracts will expire at $0

An issue about that is that all other things being equal $100 will be worth more if the US is not nuked than if it is.

Would buying him the first round count? ;-)

OTOH "venusian" sounds like it's about the planet.

to the extent that 'paternalism' implies 'when done by males' I would perhaps want to use a different word

"Parentalism"?

(And "maternalism" when done by females? ;-))

You won't get approached by women just for looking good

Speak for yourself! :-)

Since other people are biologically similar to me, they probably say "I'm conscious" for the same reason as me, so it makes sense to believe them.

Be careful (2, 3).

Meh. You can have two systems of coordinates related to each other by r_1 = R_Earth^2/r_2, theta_1 = theta_2, phi_1 = phi_2, t_1 = t_2 and as per general relativity both will give you the same answers if you use them right. (But one of the two will be much much easier to use right than the other.)

I mean that on a 2D board, you could have a king in the corner and a queen directly adjacent above and beside it, and that would be mate.

No, unless the queen is defended by some other piece, otherwise the king could just capture it. Or am I missing something?

0philh
Ah, I was unclear: I meant two queens, one each above and beside.

Putting these numbers together, a value of "having a chicken for a specific lunch" is about 1 / 1 000 000 of a value of a human life.

I'd estimate that as ((amount you're willing to pay for a chicken lunch) - (amount you're willing to pay for a vegan lunch))/(statistical value of life). But that's in the same ballpark.

How large part of "a value of human's life" is "having lunch, in general, as opposed to only having a breakfast and a dinner every day of your life"? Let's say it's somewhere between 1/10 and 1/100,

I.e. you'd take a 1% chance of being killed straight away over a 100% chance of never being allowed to have lunch again, but you'd take the latter over a 10% chance of being killed straight away?

...Huh. Actually, rephrasing it this way made the numbers sound less implausible to me.

I don't know much anything about relativity, but waves on a grid in computational fluid dynamics (CFD for short) typically don't have the problem you describe.

Not even for wavelengths not much longer than the grid spacing?

0btrettel
I don't see how that would be a problem. Perhaps I'm missing something, so if you could explain I'd be appreciative. Usually the problem is that wavelengths smaller than the grid size obviously can't be resolved. A class of turbulence modeling approaches can help with that to a certain extent. This class of methods is called "large eddy simulation", or LES for short. You apply a low pass filter to the governing equations and then develop models for "unclosed" terms. In practice this is typically done less rigorously than I'd like, but it's a valid modeling approach in general that should see more use in other fields. (Turbulence modeling is an interesting field in itself that a rational person might be interested in studying simply for the intellectual challenge.)

Otherwise the distance is infinite.

A metric is supposed to be always finite. Note the round right bracket in https://en.wikipedia.org/wiki/Metric_(mathematics)#Definition.

0arundelo
Fixed link.
0Thomas
This is probably not the intended link.

Do you also find the scientific doctrine of light, and mater, being both particle and wave internally incoherent.

Depending on what exactly you mean by "particle" that's either no less tautological than dogs being both mammals and animals or a possibly-only-approximate provisional model (complete with well-studied mathematical techniques to sweep the consequences of the incoherence under the rug) we're using while we figure out how to extend quantum field theory down to the quantum gravity scale and beyond.

you learn science inter alie to achieve job safety

LOL

They said "adjacent in design space". The Levenshtein distance between return val; and return -val; is 1.

-1Lumifer
So being served a cup of coffee and being served a cup of pure capsaicin are "adjacent in design space"? Maybe, but funny how that problem doesn't arise or even worry anyone...

Ethanol has that OH group. It's a polar molecule, and a small one.

Yes, I was just mentioning it as an example.

But take two pure long-chained fatty acids, mix well, and then what will happen?

I guess they stay mixed. They are pretty similar molecules, so the forces that hold e.g. oleic acid molecules together so that it doesn't evaporate (Van der Waals, I think?) can just as well hold oleic acid molecules to e.g. linoleic acid molecules. (Whereas since water molecules and oleic acid molecules are pretty different, the force between a water molecule and an oleic acid molecule is a lot smaller than between two water molecules or two oleic acid molecules.)

So, they don't just form very small micelles within the body of the, well, liquid of which there's more there?

I don't think they would. After all, olive oil and sunflower oils are themselves mixtures of several different fatty acids.

if their amounts are comparable, they will just separate according to gravity

Not if they form a solution, which I think they do. After all it's not like if you leave a bottle of vodka alone all the water will sink to the bottom and all the ethanol will float to the top.

0MaryCh
Ethanol has that OH group. It's a polar molecule, and a small one. But take two pure long-chained fatty acids, mix well, and then what will happen? (I said "oils" to show I didn't mean a "hydrophobic in polar" solution, which I hadn't thought the question implied.)

No, I don't. I was just pointing out that you picked a very disingenuous way of stating that. (You could have said instead, for example, "some people who said something mean about the migrants have gotten harsher sentences")

true facts

Huh. I've been living for a year in a city where most of the population is foreign-born (myself included) and it doesn't look like it's going to hell. In particular I feel safer here than in certain other places with many fewer immigrants.

You may want to learn about how chilling effects on free speech work.

J... (read more)

If you make 100 loaves and sell them for 99 cents each, you've provided 1 dollar of value to society, but made 100 dollars for yourself.

Total, $101. (Society also includes you.)

If you make 100 loaves and give them away to those who can't afford it, you've provided 100 dollars of value to society, but made zero for yourself.

Total, $100.

2philh
Total $100 in both cases, because you only earn $99 in the first case.

So basically you're conceding I'm right, but still want to call bullshit on it.

If by "some" you literally meant nothing but "more than zero", fine. (But "some" people get harsh sentences for pretty much anything, so "some people get harsh sentences for X" is not very informative about how little X is tolerated.)

But usually "somebody who does X undergoes Y" is used to imply something like "if you do X you'll most likely undergo Y", which in this case is very far from being the case. (I just hav... (read more)

0lmn
So you consider harsh sentences for pointing out true facts about migrant behavior to be reasonable as long as it only happens to "some" people? You may want to learn about how chilling effects on free speech work.

There is a significant qualitative difference

Did you mean to type "quantitative"? If you didn't, what difference?

Once per decade per planet (i.e. 2e-10/km²/yr) is "particularly often"?

0Lumifer
I merely quantified your "not particularly often" :-)

Fukushima

That was caused by the fourth strongest earthquake in the world in half a century, so it's not something you'd expect to happen particularly often.

1Lumifer
Once every 12 years or so..? :-)

Okay, make that "with probability greater than 99.95%".

Now, I've pre-committed that after Omega offers me The Deal, I'll make two quantum coin flips. If I get two tails in a row, I'll two-box. Otherwise, I'll one-box.

Omega predicted that and put the large box in a quantum superposition entangled with those of the coins, such that it will end up containing $1M if you get at least a head and containing an equal mass of blank paper otherwise.

0gilch
Interesting. Why the equal mass? Omega would need Schrodinger's box, that is, basically no interaction with the outside world lest it decohere. I'm not sure you could weigh it. Still, quantum entanglement and superposition are real effects that may have real-world consequences for a decision theory. We can inflate a quantum event to macroscopic scales like with Schrodinger's cat. You have vial of something reactive in the box to destroy the money, and a hammer triggered by a quantum event. But isn't that altering The Deal? If Omega is allowed to change the contents of the box after your choice, then it's no longer a Newcomblike problem and just an obvious quid pro quo that any of the usual decision theories could handle. I'm not sure I understand the setup. Can you cause entanglement with the coins in advance just by knowing about them? I thought it required interaction. I don't think Omega is allowed that access, or you could just as easily argue that Omega could interact with the Chooser's brain to cause the predicted choice. Then it's no longer a decision; it's just Omega doing stuff.

relativistic mass

That's not a very useful concept, because it's nothing but the total energy measured in different units. It only has a name of its own for hysterical raisins. A much more useful concept is the invariant mass, which is the square root of the total energy squared minus the total momentum squared (in suitable units), which (as the name suggests) is the same in all frames of references; in particular, it equals the total energy in the frame of reference where the total momentum is zero. Nowadays when people say "mass" they usually mean the invariant mass, because it makes more sense to call the relativistic mass "total energy" instead.

At one moment, nothing can be faster than light, the next moment there is a billion of faster than light galaxies.

The next moment, it's okay, they are not faster than light, only the space is replicating itself between us an them.

Exactly. If you have two ants on a rubber band and you stretch the rubber band, the time derivative of the distance between the ants may be larger than twice the maximum speed at which an ant can walk, but that's not due to the ants walking so there's no paradox.

0Thomas
I am not that sure, that there is no paradox. As I see, it can easily be. There is a smaller chance that there isn't any paradox, after all. Still possible. I wish, I could find an internet site, which would address those problems. I can't. Can you?

2) do the galaxies appear deformed when viewed in a telescope?

Even in flat Minkowski space-time and even with stereo vision, no they wouldn't, because the fact that the light from the far side of an object left it earlier than the light from the near side compensates the length "contraction". If anything, if the object is moving perpendicularly to the line of sight you would see it rotated.

(And I find "length contraction" a pretty misleading name. It's a purely kinematic effect due to the geometry of spacetime, and no more of a "... (read more)

0simon
No, if an object is moving away from you in Minkowski space time, the time difference of light coming from the far side and from the near side doesn't compensate the "contraction" - it actually increases the apparent contraction (assuming 3-d perception). For an object moving toward you, it counteracts as you say (and in fact makes the object appear (with our 3-d, but still light-based, camera) longer, just as it also appears to be sped up). Also what you see when observing a perpendicular motion isn't actually a rotation. Imagine a cube with opaque edges but otherwise transparent, running at high speed along tracks that are touching and aligned with the edges. The edges must remain touching and aligned with the tracks from any observer's point of view. So it's not a rotation but some kind of skew. A sphere will still look circular from a moving observer's point of view though. Agreed. I would in fact go further, in that it's not so much the effect of the geometry of spacetime, as an effect of how we choose to define a coordinate system on that geometry.

A photon is usually redshifted.

Yes. Thanks. Fixed.

I don't like this solution.

But it's the standard way the luminosity distance is defined.

There is nowhere the speed of light to be seen there.

Units with c = 1 are used in the formulas.

OTOH, the "curvature of space" they mention, is not very necessary in our flat space.

Space alone is flat (within measurement uncertainties), but space-time is curved, because space expands with time.

But the Lorentz factor would be needed here.

It's not the easiest way to treat objects moving with the Hubble flow...

Not only for the time dilatation fa

... (read more)
0Thomas
Still don't like it. c = 1, but v isn't. Therefore the gamma factor is NOT a single exponential. At any moment, space has some size, a galaxy has its apparent speed, so there are mass, volume and so on, as a well defined function. Lorentz transformations of dimensions like length, clock speed and mass. I don't care if it easy or not. I just want to know how it is. A photon is usually redshifted. Some additional redshift should occur due to the mass increase, and then some additional redshift due to the increased density, which is caused by the famous length contraction. This is not true. The whole amount of emitted radiation goes down, because the escape velocity goes up. And it is more redshifted again. I am not sure, how well known or not well known they are. Or for how long known. I just ask a question. Do we see any relativistic effects on (far) away galaxies. If we do, fine. If we do not, also fine.

Yes, they do. That's where the extra (1 + z) factor in the definition of luminosity distance comes from.

0Thomas
I don't like this solution. There is nowhere the speed of light to be seen there. OTOH, the "curvature of space" they mention, is not very necessary in our flat space. But the Lorentz factor would be needed here. Not only for the time dilatation factor, by which the energy output is to be reduced - but also for the relativistic mass increase by the same factor. And for the length contraction as well! That's the real problem, I think.

Simply starting school later would not have substantial effects in the long run, anymore than, say, changing to DST, or moving to a different timezone would.

Wait... DST makes sunrises and sunsets later by civil clocks, so I would expect its effects to be quite the opposite of starting school later (and pretty similar to those of starting schools earlier). Did you mean to say something like "abolishing DST" instead, or am I missing something?

Anyone can adjust their circadian rhythm by just going to sleep earlier,

No, the circadian rhythm doesn't work that way. Perhaps you don't notice because your chronotype is earlier than your lifestyle required so you never had much trouble falling asleep even when going to bed relatively early, but people with later chronotypes if they go to bed earlier will just take more time to fall asleep.

2bogus
Everyone has trouble falling asleep when they're going to bed earlier than usual, at first. If you keep at it and are consistent about avoiding things like bright artificial lights, high general arousal, strong drugs like coffee and other adverse environmental cues later in the day, you'll fall asleep and your "chronotype" will shift back as intended.

On the other hand, utilitarianism is a subset of consequentialism, so whereas a criticism of utilitarianism is not necessarily a criticism of consequentialism, the converse is true.

I think people who say[1] that guess culture only exists some places are meaningfully confused.

Or maybe they just don't fall prey to the fallacy of gray and realize it sometimes might make sense to call something black even though it doesn't literally scatter exactly no light at all (otherwise there'd be no point in having a word if it didn't apply to anything at all).

0the gears to ascension
I understand that. I wrote the post you're replying to with that in mind. I think the thing that people call guess culture actually applies almost everywhere, and anything but high trust between very close friends will secretly be only using different words, but have the same guessing patterns. I'm not making some wordplay claim here, I actually think there is a high magnitude error in the theory and that the update is to apply guess culture almost everywhere.

I don't think you can escape guess culture.

Sometimes you can escape it literally, e.g. move to a different city or find a different social circle.

4the gears to ascension
No, I mean this more strongly than that. I literally do not think it's possible to interact with humans without using guess culture. all of human interaction is the same as the thing that got labeled guess culture; sometimes it can also be ask culture or also tell culture, but I think it's meaningfully true that ask culture is just different defaults for guess culture, and you're still actually doing just as much guessing. I do think you can reduce guessing via trust, and that guessing with the goal of building trust is something people automatically do, but I think people who say[1] that guess culture only exists some places are meaningfully confused. I also think that "tell culture" is a subset of interaction that only works with high trust - and I think people who "are" guess culture will naturally do things that look more like tell culture when trust is high. [1] (or have said in the past, before updating on my saying this)

I'm not taking orders from a glorified janitor

Do you say that to bouncers in real life too? How does that work out?

0Elo
heh.

We need data, but we also must prioritize understanding the data we have over collecting ever more data.

-- Bruce Schneier

bursts into laughter, then resumes eating pop-corn

2Elo
good

The claim doesn't mention any measurement uncertainties.

That's why I said "much more". If I claimed "X is greater than Y" and it turned out that X = 15±1 and Y = 47±1, would my claim not be falsified because it didn't mention measurement uncertainties?

It's not precise enough to be falsifiable

Yes it is. For example, if CO2 concentrations and/or global temperatures went down by much more than the measurement uncertainties, the claim would be falsified.

0Lumifer
I said: The claim doesn't mention any measurement uncertainties. Moreover, the actual claim is "CO2 cascades into a warming event" and, y'know, it's just an event. Maybe it's an event with a tiny magnitude, maybe another event happens which counterbalances the CO2 effect, maybe the event ends, who knows...

iqtopercentile = lambda x: erfc((x-100)/15)/2

The 15 should be (15.*sqrt(2)) actually, resulting in iqtopercentile(115) = 0.16 as it should be rather than 0.079 as your expression gives, iqtopercentile(165) = 7.3e-6 (i.e. 7 such people in a city with 1 million inhabitants in average), and iqtopercentile(180) = 4.8e-8 (i.e. several hundred such people in the world).

(Note also that in python (x-100)/15 returns an integer whenever x is an integer.)

let's say theta is modeled by a Gaussian

The conjugate prior of the binomial distribution is the beta distribution, so if you use a beta distribution for theta, the posterior is also a beta distribution, and the expected value of the posterior predictive is just (u0 + u)/(u0 + u + d0 + d) where u and d are the number of up- and downvotes and u0 and d0 are the parameters of the prior distribution, or pseudocounts.

1tristanm
You're right, that's in the second chapter of Gelman too. I'll edit that.

we don't have a word for people who ... don't believe they are avatars of a god either

https://en.wikipedia.org/wiki/Laity

0gjm
Nope, not at all the same thing as "not avatars of a god". (Most clergy do not consider themselves avatars of anything; someone might consider himself or herself an avatar without being a member of any sort of clergy.)
2komponisto
The first link is MM saying what EY would later say in No Safe Defense, Not Even Science.
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