Search found 20934 matches

by gmalivuk
Tue Aug 01, 2017 4:57 pm UTC
Forum: Science
Topic: Wave Questions
Replies: 12
Views: 900

Re: Wave Questions

Are you talking about white noise or are you talking about a sound with a single pitch?
by gmalivuk
Mon Jul 31, 2017 12:04 am UTC
Forum: Serious Business
Topic: How would you change the U.S. tax system?
Replies: 159
Views: 8082

Re: How would you change the U.S. tax system?

The first thing I would try to do, mostly because it would be the least controversial, is replace the tax brackets with a continuous function. It is already a continuous function. 1) Formally dividing society up into different socio-economic classes never results in good things. Do you have any evi...
by gmalivuk
Fri Jul 28, 2017 4:49 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1867: "Physics Confession"
Replies: 182
Views: 7057

Re: 1867: "Physics Confession"

Yeah, I think you've got it exactly right. Here in the US, You keep using the word "most americans" along with other generalities that I think are grossly misrepresented. I grew up in Missouri and live in Kansas (definitely bible thumping country) now. Rest assured, evolution is absolutel...
by gmalivuk
Thu Jul 27, 2017 3:22 am UTC
Forum: Mathematics
Topic: Determining line of sight over time
Replies: 30
Views: 1866

Re: Determining line of sight over time

Oh I'm fairly confident it's either spam or someone who wants us to do their homework. But it's still a question with some interesting features to discuss, even if it's not solvable in general.
by gmalivuk
Wed Jul 26, 2017 3:53 pm UTC
Forum: Mathematics
Topic: Determining line of sight over time
Replies: 30
Views: 1866

Re: Determining line of sight over time

Yeah, it's not explicit but I agree that the objects are meant to be stationary and only the two points are moving.

The answer is only trivial if *everything* is stationary, points and objects alike. Then after acknowledging that, the OP only mentions the two points moving.
by gmalivuk
Wed Jul 26, 2017 3:41 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1867: "Physics Confession"
Replies: 182
Views: 7057

Re: 1867: "Physics Confession"

While we agree that "Purpose requires conscious intent" is too narrow In what way? In the ways we've been discussing this whole time? Taking the argument to its conclusion, the desk is also a product of evolution. Genes chosen by natural selection built the person who built the desk. You'...
by gmalivuk
Wed Jul 26, 2017 1:55 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1867: "Physics Confession"
Replies: 182
Views: 7057

Re: 1867: "Physics Confession"

I have always wondered why people don't just answer truthfully that they don't know, or even better, that humanity in general does not know yet, but the kid can try to find out the answer if they like. Is it because too many people are convinced they have to pretend to be all-knowing and all-powerf...
by gmalivuk
Wed Jul 26, 2017 3:09 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1867: "Physics Confession"
Replies: 182
Views: 7057

Re: 1867: "Physics Confession"

Yeah, Ruth Millikan dabbles a bit in philosophy, as well, and reading some of her stuff in a philosophy class is where I first read the idea of a naturalistic or evolutionary account for things like function and purpose.
by gmalivuk
Tue Jul 25, 2017 9:49 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1867: "Physics Confession"
Replies: 182
Views: 7057

Re: 1867: "Physics Confession"

It looks like ucim believes it wouldn't be correct to talk about the purpose of the eardrum, literal or metaphorical. You misread me. See my comments about sweat glands here , and compare with my comments about a pile of rock that happens to dam a river. Ah, I missed that post by clicking on the no...
by gmalivuk
Tue Jul 25, 2017 8:04 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1867: "Physics Confession"
Replies: 182
Views: 7057

Re: 1867: "Physics Confession"

If you want to call that a metaphor, there's still the question of when it's appropriate to use.

It looks like ucim believes it wouldn't be correct to talk about the purpose of the eardrum, literal or metaphorical.
by gmalivuk
Tue Jul 25, 2017 7:34 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1867: "Physics Confession"
Replies: 182
Views: 7057

Re: 1867: "Physics Confession"

I think the question, "What's the eardrum for?" has more than a merely metaphorical answer.
by gmalivuk
Tue Jul 25, 2017 4:47 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1867: "Physics Confession"
Replies: 182
Views: 7057

Re: 1867: "Physics Confession"

Defining "purpose" so narrowly that no part of any organism has any purpose seems to remove most of the usefulness of having the word in the first place.
by gmalivuk
Tue Jul 25, 2017 3:57 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1867: "Physics Confession"
Replies: 182
Views: 7057

Re: 1867: "Physics Confession"

The purpose of something is what it's good for. I don't see it that way. To me, the purpose of something is what it's made for (or pressed upon to do). Intent is essential for something to have "purpose", though that intent need not be conscious. So you're saying sweat doesn't in fact hav...
by gmalivuk
Tue Jul 25, 2017 2:27 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

Well, to take Hubble as an example again, a real teapot would appear as a dimensionless point anywhere beyond a few hundred kilometers, but it would still be visible far beyond that if the exposure time was long enough.
by gmalivuk
Mon Jul 24, 2017 4:57 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

All you 'detectors' out there seem to be missing the part of the quote that says... ...nobody would be able to disprove my assertion provided I were careful to add that the teapot is too small to be revealed even by our most powerful telescopes . So if you were to detect it from Earth using the mos...
by gmalivuk
Mon Jul 24, 2017 3:33 pm UTC
Forum: Logic Puzzles
Topic: Isosceles triangles and circles : puzzle connection
Replies: 15
Views: 688

Re: Isosceles triangles and circles : puzzle connection

You're welcome, just don't get upset when people don't completely understand your problem after one post in your second language.
by gmalivuk
Mon Jul 24, 2017 3:17 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

All you 'detectors' out there seem to be missing the part of the quote that says... ...nobody would be able to disprove my assertion provided I were careful to add that the teapot is too small to be revealed even by our most powerful telescopes . So if you were to detect it from Earth using the mos...
by gmalivuk
Mon Jul 24, 2017 2:55 pm UTC
Forum: Logic Puzzles
Topic: Isosceles triangles and circles : puzzle connection
Replies: 15
Views: 688

Re: Isosceles triangles and circles : puzzle connection

The right to progress is to ask for clarity before trying to solve the puzzle. That's what people have done. My examples were not giving triangles other than right. I answered quickly because I had in mind many pictures I did not post. It's hard to progress when your original post isn't clear, when...
by gmalivuk
Mon Jul 24, 2017 1:47 pm UTC
Forum: Gaming
Topic: Fallout 4
Replies: 153
Views: 18242

Re: Fallout 4

Yeah, I"ve never bothered with heavy weapons because I've never had a character in any Fallout game who had enough inventory space to make it worthwhile, so early on I figure out that my provisioners (especially the ones going through Boston proper) should get all of the miniguns and missile la...
by gmalivuk
Sun Jul 23, 2017 1:48 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

It would be great if morriswalters deigned to let us know which scenario he's talking about whenever he makes claims about its efficacy. A: There is one telescope at the center. B: There are multiple telescopes at the center. C: There are multiple telescopes in the region where the teapot might be. ...
by gmalivuk
Sun Jul 23, 2017 10:48 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

I asked if you were drunk because that reply was so incoherent, not because whatever ideas you were trying to express were bad ones. We can see all of Earth because we have multiple satellites, so no single one has to be able to see everywhere. And whether one person can "experience it" is...
by gmalivuk
Sun Jul 23, 2017 1:36 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

Me- You can't look everywhere at once. You-There is no reason in principle for this to be true. Make statements about godlike behavior and I will ignore them going forward. What part of eventually having lots of detectors out in space is godlike? And is it godlike in a way qualitatively different t...
by gmalivuk
Sat Jul 22, 2017 11:57 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

I see, so you made a bunch of unjustified assumptions about detection instruments and didn't bother to mention them, and also wrote a paragraph that looked like you were disagreeing but never actually addressed my statement. I don't argue with theists so I answered the question I assumed you meant ...
by gmalivuk
Sat Jul 22, 2017 7:23 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

The Wikipedia article on radar astronomy says a good radar can detect a 1km object most of an AU away, meaning it could detect a 10cm object at a million kilometers.
by gmalivuk
Sat Jul 22, 2017 3:21 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

Yeah, if the thing you're looking for (teapot or keys) could move under its own power, you would need multiple detectors to make sure it's not simply avoiding the limited detection range of a single one, but if it moves predictably (a subset of which is staying in one place), a single moving detecto...
by gmalivuk
Sat Jul 22, 2017 2:49 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

The phrase "between Earth and Mars" suggests the plane. A hundred or so orbiting radar stations would be enough to eventually find any teapots orbiting there.
by gmalivuk
Sat Jul 22, 2017 12:03 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

I see, so you made a bunch of unjustified assumptions about detection instruments and didn't bother to mention them, and also wrote a paragraph that looked like you were disagreeing but never actually addressed my statement. First of all, I can see a teapot with my eyes more than 200 feet away, and ...
by gmalivuk
Sat Jul 22, 2017 1:35 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

↶ There is no reason in principle for this to be true. There are some practical problems. And you have limits if the universe doesn't. And you're limited by the ability to see the teapot. The only viewpoint that can see everywhere at once is at the center of the system. The maximum view port is the...
by gmalivuk
Fri Jul 21, 2017 9:12 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 1866: "Russell's Teapot"
Replies: 78
Views: 3991

Re: 1866: "Russell's Teapot"

(That he postulated a teapot is so twee and so quintessentially British that I can't help picturing Russell as a kind of Alan Bennett of philosophy. An American would probably have mentally launched a "football" [handegg]; a French philosopher - I don't know - a baguette, perhaps?) I mean...
by gmalivuk
Tue Jul 18, 2017 4:52 pm UTC
Forum: What If?
Topic: What-If 0108: "Expensive Shoebox"
Replies: 151
Views: 55816

Re: What-If 0108: "Expensive Shoebox"

Keybounce wrote:(quick question: Is there some summary notation, like 20^(4)20, to avoid having lots of arrows?)
20^^^^20 = 20→20→4, using Conway chained arrows
by gmalivuk
Sun Jul 16, 2017 4:57 pm UTC
Forum: Science
Topic: Science-based what-if questions
Replies: 317
Views: 24251

Re: Science-based what-if questions

↶ Change in latitude: from 53.98 to 32.61°N 464.0846 m/s to 464.7603 m/s Those numbers are definitely not right, as they're both faster than a point on the equator. It should be 272m/s to 390m/s. ↶ Change in latitude: from 53.98 to 32.61°N 464.0846 m/s to 464.7603 m/s, 107.687 to 108.001 MJ / m 3 ,...
by gmalivuk
Fri Jul 14, 2017 4:24 pm UTC
Forum: Fictional Science
Topic: What if there was an Alien Invasion?
Replies: 86
Views: 2282

Re: What if there was an Alien Invasion?

There wouldn't be any arms races to advance the technology of war as such, but tools for hunting, farming, and mining can be used as deadly weapons in any case. In other words, they might not develop warfare, but they would still have developed weapons. Edit: Also, though they may not be competitive...
by gmalivuk
Fri Jul 14, 2017 3:36 pm UTC
Forum: Fictional Science
Topic: What if there was an Alien Invasion?
Replies: 86
Views: 2282

Re: What if there was an Alien Invasion?

Any time.

(In a discussion about a potential species that never had or had then lost the knowledge of violence, simplifying a civilization down to a single entity has already been done. If it was a problem for you, you should have said so then.)
by gmalivuk
Fri Jul 14, 2017 3:33 pm UTC
Forum: Fictional Science
Topic: What if there was an Alien Invasion?
Replies: 86
Views: 2282

Re: What if there was an Alien Invasion?

Any time you want to demonstrate that you do know what you're talking about, such as with actual non-handwaving arguments from game theory, you go right ahead.
by gmalivuk
Fri Jul 14, 2017 11:47 am UTC
Forum: Fictional Science
Topic: What if there was an Alien Invasion?
Replies: 86
Views: 2282

Re: What if there was an Alien Invasion?

I mean the point speising was making with the statement you took issue with. Here in this thread about aliens meeting each other. It's as if he posted about how water boils at a lower temperature at higher altitude, and you responded with, "How can water boil at 80C? Everyone knows pure water b...
by gmalivuk
Fri Jul 14, 2017 4:36 am UTC
Forum: Fictional Science
Topic: What if there was an Alien Invasion?
Replies: 86
Views: 2282

Re: What if there was an Alien Invasion?

Why did you reply about evolution of one species on a planet to a post about intelligent alien civilizations meeting?

Don't get upset at other people misunderstanding you after you change the subject without telling anyone.
by gmalivuk
Fri Jul 14, 2017 12:15 am UTC
Forum: Fictional Science
Topic: What if there was an Alien Invasion?
Replies: 86
Views: 2282

Re: What if there was an Alien Invasion?

Thesh, you responded to this as if you disagreed: In the real world, the trustful alien race will encounter exactly one untrustworthy alien race (from the same-alien-place, very likely, before even becoming spacefaring) before it has to adapt to being not unconditionally altruistic, or suffer. But t...
by gmalivuk
Thu Jul 13, 2017 9:17 pm UTC
Forum: Fictional Science
Topic: What if there was an Alien Invasion?
Replies: 86
Views: 2282

Re: What if there was an Alien Invasion?

No one has said that a random first contact event will most likely lead to war. The point is that if *any* species goes the shoot-first route, it would tend to beat species that are too trusting. Always-cooperate is unstable because it only takes a single defector to take advantage of that naive app...
by gmalivuk
Thu Jul 13, 2017 5:13 pm UTC
Forum: Fictional Science
Topic: What if there was an Alien Invasion?
Replies: 86
Views: 2282

Re: What if there was an Alien Invasion?

ignoring the fact that they are building spaceships and thus you can no longer make the assumption that they are driven purely by their genetics since they are cooperating on a large scale (as you see humans cooperate on larger and larger scales over time). Incidentally, there's no justification fo...
by gmalivuk
Thu Jul 13, 2017 4:52 pm UTC
Forum: Fictional Science
Topic: What if there was an Alien Invasion?
Replies: 86
Views: 2282

Re: What if there was an Alien Invasion?

Do I trust you enough to know that you'll trust me. Moreover that I can trust you to trust me to be trusting in you. And can I trust that you'll be trusting enough in my trusting of your own trust... In the real world, the games play out repeatedly, and so that shouldn't be an unknown. No, in the r...

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