Search found 3289 matches

by Eebster the Great
Thu Dec 20, 2018 11:55 am UTC
Forum: Science
Topic: quarkcosh1's miscellaneous science posts
Replies: 73
Views: 13072

Re: The fine structure constant and the quark mass ratios derived from the j invariant

Doing a bunch of random, unmotivated calculations and attempting to spot similar numbers by eye is not a derivation. It's not even really numerology. It's not even not even wrong.
by Eebster the Great
Thu Dec 20, 2018 11:54 am UTC
Forum: Science
Topic: What is my Exact Mailing Address?
Replies: 11
Views: 3327

Re: What is my Exact Mailing Address?

You also should give a time range within which you would like the package to be delivered. For instance, it will do no good to deliver it in ten billion years.
by Eebster the Great
Wed Dec 19, 2018 12:34 pm UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

The outer edges of the town naturally spawn young, incompetent goat-herders. So why did it take so long for the AI to learn to camp the ones near wolf spawns?
by Eebster the Great
Sun Dec 16, 2018 7:32 pm UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

The difference is that the man did not fight the wolf, in the sense that he did not fight at all. He simply tried to save his arm. There is a difference between someone trying to save themself while fending off a wolf and someone trying to kill a wolf. Citing that attack is like citing a massacre to...
by Eebster the Great
Sat Dec 15, 2018 11:16 pm UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

What exactly are you proposing I look up to support my claim that an inexperienced person can stab things in the back with a makeshift spear? Is there like a video out there of people doing it? Should I go and make my own spear and try it? So far, you have looked something up, a story of a person be...
by Eebster the Great
Sat Dec 15, 2018 3:57 am UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

Well, stabbing things with spears is again the main way humans have hunted for hundreds of thousands of years and also the main way they fought each other. You seem to be suggesting that stabbing things in the back, famously the easiest way to kill people by surprise, is not the easiest way to kill ...
by Eebster the Great
Sat Dec 15, 2018 3:09 am UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

Also because she had a rope. Well, if the wolf isn't aware of your presence, you can just fashion a makeshift spear and impale it. You said catch it unaware, not "have enough time to fashion a lethal weapon using no tools and to become skilled enough with that weapon to incapacitate a large pr...
by Eebster the Great
Fri Dec 14, 2018 7:27 am UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

Well, if the wolf isn't aware of your presence, you can just fashion a makeshift spear and impale it. But if we are assuming no weapons, it will be harder. Even then, attacking a wolf from behind gives you a much, much better shot than from the front. The story you quoted points out that you can lit...
by Eebster the Great
Fri Dec 14, 2018 7:19 am UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 57
Views: 11130

Re: disproof of boltzman brain?

Quizatzhaderac wrote:Each sub section (taken desperately) has a chance of having less than maximal entropy.

What about the stoic subsections that know no desperation?
by Eebster the Great
Thu Dec 13, 2018 11:21 pm UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

If the human is caught unaware, of course he'll be at a disadvantage, but if the wolf is caught unaware, it won't even be a fight, so that doesn't seem like the fairest comparison.
by Eebster the Great
Wed Dec 12, 2018 9:38 pm UTC
Forum: Science
Topic: How to calculate the surface tension between water and pure oxygen gas
Replies: 5
Views: 3517

Re: How to calculate the surface tension between water and pure oxygen gas

Surface strain is the imperativeness, or work, required to grow the surface region of a liquid due to intermolecular forces. Since these intermolecular forces vary dependent upon the possibility of the liquid (e.g. water versus fuel) or solutes in the liquid (e.g. surfactants like chemical), each c...
by Eebster the Great
Wed Dec 12, 2018 4:12 am UTC
Forum: Science
Topic: Building a chair out of glue
Replies: 6
Views: 2510

Building a chair out of glue

It is a surprising but well-known fact that modern wood glue is much stronger than wood. When I first learned this as a little kid I was both fascinated and suspicious: how could the fastener be stronger than the main construction material? Why not just build everything out of glue? That's obviously...
by Eebster the Great
Tue Dec 11, 2018 9:05 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 277
Views: 49904

Re: Science fleeting thoughts

The whole point of this discussion is that the SI units have been redefined. The mole is now defined by SI as follows: The mole, symbol mol, is the SI unit of amount of substance. One mole contains exactly 6.022 140 76 × 10 23 elementary entities. This number is the fixed numerical value of the Avog...
by Eebster the Great
Tue Dec 11, 2018 8:10 am UTC
Forum: Language/Linguistics
Topic: Moderatores Populusque XKCDi [Latin]
Replies: 167
Views: 76760

Re: Moderatores Populusque XKCDi [Latin]

Yeah, "disciplina" is first declension, and "per" takes the accusative, so it's definitely "per disciplinam." The possessive adjective "meus/-a/-um" has to agree with the noun it is modifying ("discliplinam"), so it also needs the feminine accusative...
by Eebster the Great
Mon Dec 10, 2018 9:05 pm UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

Not really. A dog's neck is not nearly as strong as your leg. And I know if they can plant all their feet they can use other muscles too, but in practice, the human is going to win. Like, have you ever played tug of war with a large dog to a decision? Most people keep playing until they get bored an...
by Eebster the Great
Sun Dec 09, 2018 10:32 pm UTC
Forum: Language/Linguistics
Topic: Punnilingus
Replies: 135
Views: 64948

Re: Punnilingus

How can "A Prairie Home Companion" possibly still be running? It's the most boring radio show on Earth.
by Eebster the Great
Sat Dec 08, 2018 6:27 am UTC
Forum: Language/Linguistics
Topic: Annoying words, and Words You Hate
Replies: 1972
Views: 475717

Re: Annoying words, and Words You Hate

OK, I get the noun vs. verb thing. Though, at the end of the day, the new use is hardly surprising.
by Eebster the Great
Fri Dec 07, 2018 11:29 pm UTC
Forum: Language/Linguistics
Topic: Annoying words, and Words You Hate
Replies: 1972
Views: 475717

Re: Annoying words, and Words You Hate

"transitioning" It somehow escaped corporate meetings and infected the general public. Just use "changing" or "switching" or even "in transition to" for crying out loud. These days, I mostly hear that term for people in a gender transition, MTF or FTM. The te...
by Eebster the Great
Fri Dec 07, 2018 9:10 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 57
Views: 11130

Re: disproof of boltzman brain?

It is not the case that a larger universe is more likely to develop a brain, because the issue is not just size, but entropy. A very large universe that is at thermal equilibrium will not produce brains in any way except by spontaneous fluctuations, because it's in equilibrium already, so nothing el...
by Eebster the Great
Thu Dec 06, 2018 8:42 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 57
Views: 11130

Re: disproof of boltzman brain?

I mean that a large universe which develops into a vacuum with a surprise brain in the middle is still more likely than a large universe with such low entropy that not only do you get a brain, but also planets and stars and stuff. Because the former is far higher entropy.
by Eebster the Great
Thu Dec 06, 2018 8:37 pm UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

a single bite could be quite serious if it's from a real dog, not a house rat. and dogs have additionally four nasty claws whith which they can bother you while you try to get a hold on their neck. i don't think it's as clear as that. we don't have any natural weapon which could pierce a wolf's ski...
by Eebster the Great
Thu Dec 06, 2018 2:10 pm UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

a single bite could be quite serious if it's from a real dog, not a house rat. and dogs have additionally four nasty claws whith which they can bother you while you try to get a hold on their neck. i don't think it's as clear as that. we don't have any natural weapon which could pierce a wolf's ski...
by Eebster the Great
Thu Dec 06, 2018 2:05 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 57
Views: 11130

Re: disproof of boltzman brain?

The universe in this model is infinite, not a single point. But due to inflation, a region that was once extremely small (though not literally a single point) is now larger than the entire observable universe. This inflationary event may be the low entropy event we are discussing. In any case, the i...
by Eebster the Great
Thu Dec 06, 2018 3:47 am UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 57
Views: 11130

Re: disproof of boltzman brain?

That doesn't resolve the problem, as big universes are still more likely to develop one or more Boltzmann brains than the types of brains we consider. Even if the total population of brains over the course of history is 10^10^10, the Boltzmann brains will still outnumber them.
by Eebster the Great
Thu Dec 06, 2018 3:45 am UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 277
Views: 49904

Re: Science fleeting thoughts

Thesh wrote:That would also say that 1 is the only unit in the natural numbers, which is probably more applicable.

The natural numbers don't form a ring. In the ring of integers, there are two units, 1 and -1.
by Eebster the Great
Thu Dec 06, 2018 3:44 am UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 8784

Re: Biology: Wolves vs. Humans

Even in a no-holds-barred grudge match, I'm fairly confident five adult humans would defeat three adult wolves. Assuming the humans are reasonably fit, anyway. There is this trope out there that humans are somehow uniquely weak animals, and it is simply inaccurate. We are much larger than wolves. Ev...
by Eebster the Great
Wed Dec 05, 2018 11:49 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 57
Views: 11130

Re: disproof of boltzman brain?

Tub explained it much better than I could. The important caveat is that the brain doesn't have to just appear on its own immediately after the rare event; it could be a much later consequence of it. And we know for sure that real brains are a consequence of the real universe we have, so in order to ...
by Eebster the Great
Wed Dec 05, 2018 11:47 pm UTC
Forum: Science
Topic: Science fleeting thoughts
Replies: 277
Views: 49904

Re: Science fleeting thoughts

My abstract algebra course taught me that a "unit" in a ring is an element with a multiplicative inverse, so by transitivity of definitions, all real numbers are units except 0.
by Eebster the Great
Wed Dec 05, 2018 5:06 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 57
Views: 11130

Re: disproof of boltzman brain?

Most of them. The thing is, brains tend to be significantly smaller than the entire universe. Ultimately, this is an argument about entropy, and a low entropy universe is much, much less probable than a low entropy brain no matter how it is arranged . Consider that in reality, your extremely improb...
by Eebster the Great
Tue Dec 04, 2018 11:28 am UTC
Forum: Science
Topic: To completely prevent any form of Mad Cow Disease?
Replies: 17
Views: 4148

Re: To completely prevent any form of Mad Cow Disease?

The Infinity Gauntlet killed half of all people, which is not much like BSE. It's more like what it is--a rare disease. You are hundreds of times more likely to get regular Creutzfeldt-Jakob disease than Mad Cow. I get that, in the context of the media about the disease, it seems very scary. And eve...
by Eebster the Great
Mon Dec 03, 2018 6:44 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 57
Views: 11130

Re: disproof of boltzman brain?

Most of them. The thing is, brains tend to be significantly smaller than the entire universe. Ultimately, this is an argument about entropy, and a low entropy universe is much, much less probable than a low entropy brain no matter how it is arranged . Consider that in reality, your extremely improba...
by Eebster the Great
Sat Dec 01, 2018 12:57 pm UTC
Forum: Science
Topic: To completely prevent any form of Mad Cow Disease?
Replies: 17
Views: 4148

Re: To completely prevent any form of Mad Cow Disease?

Why was Mad Cow such a big player in the news, anyway? It is an extraordinarily rare disease. I guess because it’s scary, incurable, known to transmit to people via food, known to have entered the human food supply, and it’s likely that at least few hundred people contracted it. But there are hundr...
by Eebster the Great
Fri Nov 30, 2018 6:58 am UTC
Forum: Science
Topic: To completely prevent any form of Mad Cow Disease?
Replies: 17
Views: 4148

Re: To completely prevent any form of Mad Cow Disease?

Why was Mad Cow such a big player in the news, anyway? It is an extraordinarily rare disease.
by Eebster the Great
Thu Nov 29, 2018 3:16 am UTC
Forum: Science
Topic: To completely prevent any form of Mad Cow Disease?
Replies: 17
Views: 4148

Re: To completely prevent any form of Mad Cow Disease?

There is also a small but nonzero probability of prions arising spontaneously on a cow without infection, for instance due to a de novo mutation. Any real solution must focus on making the probability of infection lower, not making it zero.
by Eebster the Great
Tue Nov 27, 2018 5:44 am UTC
Forum: Mathematics
Topic: Banach-Tarski
Replies: 1
Views: 2055

Re: Banach-Tarski

UDLR is equal to no rotation at all, because up and down cancel and left and right cancel. But rotations in three dimensions are not commutative, so ULDR is not equal to UDLR. I don't know what part of the video you're referring to, so I can't really answer the question.
by Eebster the Great
Tue Nov 27, 2018 5:34 am UTC
Forum: Individual XKCD Comic Threads
Topic: 2073: "Kilogram"
Replies: 97
Views: 15854

Re: 2073: "Kilogram"

Fine. Configuration space can be infinite-dimensional, but spacetime is still four-dimensional at all observed scales. Maybe I'm using the wrong vocabulary, but I don't think the claim that we are not living in a Hilbert space is particularly controversial.
by Eebster the Great
Sat Nov 24, 2018 3:55 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 2073: "Kilogram"
Replies: 97
Views: 15854

Re: 2073: "Kilogram"

Phase space can be infinite-dimensional, but each particle still has just three degrees of translational freedom. We don't "live in" an infinite-dimensional Hilbert space.
by Eebster the Great
Thu Nov 22, 2018 10:38 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 2073: "Kilogram"
Replies: 97
Views: 15854

Re: 2073: "Kilogram"

America is a country where the normal serving size for beer is neither one glass nor one bottle, but rather the pack of bottles in which they are sold. Drinking six to twelve bottles or tins at once is quite common among enthusiasts. No real American would drink twelve tins at once, or even a singl...
by Eebster the Great
Wed Nov 21, 2018 12:33 am UTC
Forum: Individual XKCD Comic Threads
Topic: 2073: "Kilogram"
Replies: 97
Views: 15854

Re: 2073: "Kilogram"

We refer to the base unit of mass as the kg rather than the g due to a historical accident. The original base unit of mass was called the "grave," with 1 grave = 1000 gravat and 1 bar = 1000 grave. The theory as to why in the redefinition in 1795, the "gravat" rather than the &qu...
by Eebster the Great
Mon Nov 19, 2018 1:04 am UTC
Forum: Individual XKCD Comic Threads
Topic: 2073: "Kilogram"
Replies: 97
Views: 15854

Re: 2073: "Kilogram"

Of course a weight standard is easier to get than a watt balance, but that weight standard will still be all you need. It's just that somewhere down the chain, that standard has been compared against either a watt balance or a prototype. The NIST claims that at first, the error in realization will a...

Go to advanced search