Search found 1094 matches

by tomandlu
Fri Feb 08, 2019 3:41 pm UTC
Forum: Language/Linguistics
Topic: Has anyone ever made a word square?
Replies: 31
Views: 10703

Re: Has anyone ever made a word square?

Here's mine after 20 mins arsing around...

Code: Select all

l a d s
a c r e
t i e r
e d g e
by tomandlu
Mon Jan 14, 2019 9:35 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2904
Views: 677586

Re: Miscellaneous Science Questions

Eebster the Great wrote: It also makes me wonder what is the defining distinction between carnivores and omnivores if even a "hypercarnivore" can get nearly a third of its energy from plants.


At a guess, an omnivore can survive purely on a herbivore diet, but a carnivore must have meat.
by tomandlu
Fri Jan 11, 2019 11:34 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2904
Views: 677586

Re: Miscellaneous Science Questions

p1t1o wrote:Please don't accidentally disprove all of existence guys, I just started looking for a house.


As long as it's not in Orqwith, you should be fine...
by tomandlu
Sun Dec 30, 2018 7:58 pm UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2904
Views: 677586

Re: Miscellaneous Science Questions

That's ridiculous, thus the premise must be false, and thus the identically-premised argument about the *start* of the universe must be false. There was no start, the universe is an eternal thing. This is starting to remind me of Bolztmann's Brain... I'd agree (I think) - since the conclusion to th...
by tomandlu
Fri Dec 28, 2018 6:58 pm UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2904
Views: 677586

Re: Miscellaneous Science Questions

The universe cannot be infinitely old, since if it was, it could never have reached the present moment - true or false? I really don't see how B follows from A, and people taking guesses seem to be thinking very differently from you. I think the keyword is "old". With no starting point, c...
by tomandlu
Fri Dec 28, 2018 5:16 pm UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2904
Views: 677586

Re: Miscellaneous Science Questions

doogly wrote:What you are proposing is that because there is an infinite extent in one direction, there cannot exist points at some finite distance from the origin. This makes no sense.


I was more thinking of infinite in both directions - it started an infinite amount of time ago being the significant point.
by tomandlu
Fri Dec 28, 2018 4:32 pm UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2904
Views: 677586

Re: Miscellaneous Science Questions

There are an infinite number of points between 0 and 1, and yet Zeno's arguments are still flawed. There are also an infinite number of points between zero and infinity. If the tortoise started with a 1% lead, the hare would never have caught it... What I'm saying is that, yes, it's silly to split ...
by tomandlu
Fri Dec 28, 2018 2:11 pm UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2904
Views: 677586

Re: Miscellaneous Science Questions

The universe cannot be infinitely old, since if it was, it could never have reached the present moment - true or false? Extremely false. This is like classic Zeno level nonsense. Aren't (most/all?) of Zeno's Paradoxes about creating infinities out of finite things? This seems to be the opposite IYS...
by tomandlu
Fri Dec 28, 2018 10:41 am UTC
Forum: Science
Topic: Miscellaneous Science Questions
Replies: 2904
Views: 677586

Re: Miscellaneous Science Questions

The universe cannot be infinitely old, since if it was, it could never have reached the present moment - true or false?
by tomandlu
Mon Dec 10, 2018 10:36 am UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 4184

Re: Biology: Wolves vs. Humans

When people are attacked by dogs, they usually do not fight back and attempt to escape instead or dislodge the jaws, which is futile. But if they were determined to kill it from the outset, things would go very differently. If dogs just fastened their jaws and then remained fairly static, then I mi...
by tomandlu
Fri Dec 07, 2018 3:07 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 55
Views: 6269

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. Is it? In the latter case,...
by tomandlu
Thu Dec 06, 2018 4:33 pm UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 4184

Re: Biology: Wolves vs. Humans

speising wrote:it really depends on the initiative rolls.


Also, not being a halfling...
by tomandlu
Thu Dec 06, 2018 1:04 pm UTC
Forum: Science
Topic: Biology: Wolves vs. Humans
Replies: 45
Views: 4184

Re: Biology: Wolves vs. Humans

p1t1o wrote:Humans walk after them. (https://en.wikipedia.org/wiki/Persistence_hunting)


So... Slasher movies are surprisingly realistic? ;)

As to the original question - dunno, but I'm fairly confident that the reason we 'beat' the wolves has nothing to do with one-on-one grudge matches.
by tomandlu
Thu Dec 06, 2018 9:37 am UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 55
Views: 6269

Re: disproof of boltzman brain?

Rather than resort to statistical improbabilities, wouldn't it be a better starting point to hypothesise a small, localised fluctuation in entropy that acts as a seed for a wider disruption? TBH I'm still confused as to the whole basis of the argument (although someone posted a link to a pdf I keep ...
by tomandlu
Wed Dec 05, 2018 1:50 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 55
Views: 6269

Re: disproof of boltzman brain?

Of course we're talking about a single mind. You can't claim to have independent observations of other things besides your mind, can you? You may, "but this is silly, this is like brain-in-vat arguments, these are not worthwhile to consider as a realistic model for things," and the answer...
by tomandlu
Wed Dec 05, 2018 1:40 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 55
Views: 6269

Re: disproof of boltzman brain?

elasto wrote:That's why I claim life is special


I don't think BBs relate to abiogenesis, but I may have got the wrong end of the stick.
by tomandlu
Wed Dec 05, 2018 10:30 am UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 55
Views: 6269

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 tomandlu
Mon Dec 03, 2018 4:03 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 55
Views: 6269

Re: disproof of boltzman brain?

When we speak of the probability of a BB vs an OO, don’t forget that we are speaking of the de novo origin of one—if that mind reproduces and thus generates a community or ecosystem of its kind, then that still counts as a single origin—e.g. there is one origin of homo Sapiens despite over a hundre...
by tomandlu
Mon Dec 03, 2018 3:44 pm UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 55
Views: 6269

Re: disproof of boltzman brain?

2, yes, it's very unlikely, but if your universe model includes an infinite duration spent just living at thermal equilibrium having thermal fluctuations, then however unlikely your BB is more likely than an OO. infinity * small number > big number Okay - but would I be right in saying we would hav...
by tomandlu
Mon Dec 03, 2018 11:07 am UTC
Forum: Science
Topic: disproof of boltzman brain?
Replies: 55
Views: 6269

Re: disproof of boltzman brain?

There's a few things about this that bug me - can someone enlighten me? The contention seems to be that, if the existence of the universe depended on a random fluctuation of total entropy, then BBs, absurd as they are, are more likely than actual brains. However... ⋅ What does it mean when...
by tomandlu
Wed Oct 24, 2018 3:02 pm UTC
Forum: Fictional Science
Topic: Asimov's 3 laws
Replies: 17
Views: 4431

Re: Asimov's 3 laws

Many thanks all - some very useful stuff there (as well as a few trips down memory lane...)
by tomandlu
Wed Oct 24, 2018 11:21 am UTC
Forum: Fictional Science
Topic: Asimov's 3 laws
Replies: 17
Views: 4431

Asimov's 3 laws

Given the three laws: ⋅ What's to stop anyone shouting out "all robots must immediately destroy themselves"? ⋅ What's to stop anyone 'stealing' a robot with a simple order? Finally, and slightly OT, does anyone know if the laws considered copyright of Asimov's estate or...
by tomandlu
Thu Apr 26, 2018 7:20 am UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 9266

Re: Yet another FTL question...

Also keep in mind that in the specific example you gave, what makes the difference is not the inertial motion of the spaceships and earth, but their acceleration ... It's that change in speed, acceleration, that results in the spaceships' clocks being behind when then rejoin the earth in its state ...
by tomandlu
Thu Apr 26, 2018 7:13 am UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 9266

Re: Yet another FTL question...

I think the best answer is "nope". Under special relativity, all inertial frames are equivalent. Sure, in your reference frame you measure the clocks in the other reference frame as running slow, but, in the other reference frame they measure the clocks in your reference frame as running ...
by tomandlu
Thu Apr 26, 2018 7:09 am UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 9266

Re: Yet another FTL question...

I thinkt he best answer is "it's not that special." There is a sort of important analog for a kind-of-special frame used in cosmology -- if you operate at a scale where the universe is just a homogeneous bulk, then there is a frame in which that bulk is at rest. This frame is pretty speci...
by tomandlu
Wed Apr 25, 2018 8:29 pm UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 9266

Re: Yet another FTL question...

I'm still trying to turn this into something I understand rather than just accept, and that's led me into something else that's now bugging me. One of the principals of relativity is that there are no privileged frames of reference, but isn't there one special frame of reference where time, relative...
by tomandlu
Thu Mar 29, 2018 12:44 pm UTC
Forum: Fictional Science
Topic: Integrating Superpowers into Society
Replies: 5
Views: 2823

Re: Integrating Superpowers into Society

I'm a bit curious as to where the economic/superpower margin is, such that Electro is worth hiring to save the occasional costs during surge demand, but not worth replacing the whole power system? As an aside, in Frank Miller's slightly underrated "The Dark Knight Strikes Again" (aka &quo...
by tomandlu
Wed Mar 21, 2018 3:57 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 23065

Re: Quantum Question

Naively, it seems to me that time's arrow is a result of the third law and the uncertainty principle, and as such, is a macroscopic thing. Consider an explosion; a classical case of increasing entropy. During the explosion (like at most any other time), the future is likely to be more disordered. J...
by tomandlu
Mon Mar 19, 2018 3:27 pm UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 23065

Re: Quantum Question

Someone correct me if Im wrong, but: If there is an entity present capable of observing a particle, you are not in a maximum-entropy-state universe. If you're in a minimum-entropy-state universe, there are no particles to look at...yet. So the answer is either: yes, you can tell, or; the question d...
by tomandlu
Mon Mar 19, 2018 8:11 am UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 23065

Re: Quantum Question

You are asking a question about a single particle quantum state in the first sentence, and the state of the universe in the second, so could you connect some dots? For simplicity's sake, single particles, but I'm also thinking of ratios - i.e. any statement about the whole that can be inferred from...
by tomandlu
Sun Mar 18, 2018 3:42 pm UTC
Forum: Fictional Science
Topic: Most realistic magic system and areas for improvement
Replies: 27
Views: 9817

Re: Most realistic magic system and areas for improvement

To take a left-turn, magic in Bernard Cornwell's Arthurian Warlord Chronicles * is based on never being quite sure whether it was magic or not (and when it most looks like magic, the curtain is very quickly pulled back). Nothing that happens can't be explained as a combination of coincidence, knowle...
by tomandlu
Sun Mar 18, 2018 9:07 am UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 23065

Re: Quantum Question

BTW can you tell, looking at an individual quantum particle, whether it exists in a universe of maximum or minimum entropy? Basically, is there a difference between the quantum state* of a young universe, and a universe that's reached full entropy? * a somewhat vague description, but hopefully yswim...
by tomandlu
Sat Mar 17, 2018 10:27 am UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 23065

Re: Quantum Question

PM 2Ring wrote:That sounds like Cramer's Transactional Interpretation of QM
https://en.wikipedia.org/wiki/Transacti ... rpretation which has always been one of my favourites.


HIs SF book sounds like it might be fun.

https://en.wikipedia.org/wiki/Einstein%27s_Bridge_(novel)
by tomandlu
Thu Mar 15, 2018 12:16 pm UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 9266

Re: Yet another FTL question...

gmalivuk wrote:More like the other way around. SR says spacetime behaves a certain way and from that you can derive what happens with space and what happens with time.


So, yes? (i.e. nothing else involved?)
by tomandlu
Thu Mar 15, 2018 7:59 am UTC
Forum: Science
Topic: Quantum Question
Replies: 110
Views: 23065

Re: Quantum Question

I read an article that suggested that quantum entanglement could be explained without spooky action if causality breaks down at the quantum level - i.e. a particle sends a message back in time to its twin about how it should spin, etc. If true, IYHO would this qualify as a major revision of QM or ju...
by tomandlu
Thu Mar 15, 2018 7:38 am UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 9266

Re: Yet another FTL question...

Can I check something? Does the distortion of the light-cone grid arise naturally from what happens to space and time in special relativity? i.e. can those grids be derived from those two aspects of SR alone, or is another factor required?
by tomandlu
Fri Jan 19, 2018 7:20 pm UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 9266

Re: Yet another FTL question...

Okay, and in all honesty, although I believe in the principle that FTL breaks causality, I never get it. So, given my original specification, how would I, for instance, arrange to give myself the combination of a safe when the only record of the combination was inside the safe? When you receive the...
by tomandlu
Sun Jan 14, 2018 8:53 pm UTC
Forum: Movies and TV Shows
Topic: The End of the F***ing World
Replies: 7
Views: 2359

Re: The End of the F***ing World

Yeah - started watching it on the recommendation of my daughter. I find the faux-nihilism a bit relentless, but it's great fun.
by tomandlu
Sun Jan 14, 2018 8:51 pm UTC
Forum: Fictional Science
Topic: Yet another FTL question...
Replies: 35
Views: 9266

Re: Yet another FTL question...

Okay, and in all honesty, although I believe in the principle that FTL breaks causality, I never get it.

So, given my original specification, how would I, for instance, arrange to give myself the combination of a safe when the only record of the combination was inside the safe?
by tomandlu
Fri Jan 05, 2018 7:04 pm UTC
Forum: Books
Topic: I'd like to know the name of this book/short story/comic
Replies: 664
Views: 253203

Re: I'd like to know the name of this book/short story/comic

I'm sure I've asked this before, but I'm damned if I can find it... A short SF story, where a man in the US wilderness stumbles across an alien machine that's collecting living samples. It pursues the man, and when he's finally caught after a long chase, he's released as the exercise has put him bel...

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