Search found 44 matches

by teacupthesauceror
Wed Oct 12, 2011 3:49 pm UTC
Forum: Science
Topic: Well, this could change things (neutrinos)
Replies: 289
Views: 45853

Re: Well, this could change things (neutrinos)

I would like to wave the "imaginary numbers are really real!" banner before I do anything else. Because they are. Negative numbers aren't measurable until you define an origin. Now, crazy theory time: the neutrinos, having complex rest mass, were moving in complex time. We only measured th...
by teacupthesauceror
Mon Oct 10, 2011 6:01 pm UTC
Forum: Serious Business
Topic: Psychopaths (info and experiences)
Replies: 54
Views: 15637

Re: Psychopaths (info and experiences)

The thing is, in medicine, it's much easier to measure the efficacy of a given treatment; 'yeah I gave him a shot of cortisone and the symptoms disappeared'. In psychology? 'I talked with him for six months and the symptoms disappeared' -- 'Well, what did you say?' - 'It was, uh, complicated'. Diag...
by teacupthesauceror
Mon Oct 10, 2011 2:27 pm UTC
Forum: Serious Business
Topic: Psychopaths (info and experiences)
Replies: 54
Views: 15637

Re: Psychopaths (info and experiences)

And this is why psychology is a wonderfully fluid science. Don't forget, in medicine we also group together similar sets of symptoms while having no idea of the mechanism that causes them. They're called syndromes. So yeah, while we may not know why APD exists, we're fairly sure that grouping of sym...
by teacupthesauceror
Sun Oct 09, 2011 4:10 pm UTC
Forum: Serious Business
Topic: Psychopaths (info and experiences)
Replies: 54
Views: 15637

Re: Psychopaths (info and experiences)

Ah, self-diagnosis, the bane of all psychological discussions. Let's pause for a little anecdot(al evidenc)e. I live in a house of five students, four of whom display an astounding lack of empathy. They wish pain upon others, and would not go out of their way to help another human being. None of the...
by teacupthesauceror
Sun Oct 09, 2011 2:44 pm UTC
Forum: News & Articles
Topic: U.S. Panel recommends against routine P.S.A. testing
Replies: 89
Views: 10851

Re: U.S. Panel recommends against routine P.S.A. testing

Or just stop with routine physicals altogether, and only go to a doctor when you have symptoms, thus eliminating unnecessary tests. And then educate people about what actually counts as a symptom, but that is what helpful leaflets in the waiting room are for. Granted, I come from somewhere with publ...
by teacupthesauceror
Sun Oct 09, 2011 1:43 pm UTC
Forum: News & Articles
Topic: New Research: Autism is likely Genetic
Replies: 82
Views: 10182

Re: New Research: Autism is likely Genetic

Famous false dichotomies: Genetic vs. Environmental. Just because certain genes can be linked to certain conditions doesn't mean environmental factors don't also play a role. There's a complex and subtle interaction between the two, so that for most genes what effect they will have is far from set ...
by teacupthesauceror
Mon Aug 08, 2011 6:22 pm UTC
Forum: Mathematics
Topic: Can you explain how Archemedes did it?
Replies: 5
Views: 1584

Re: Can you explain how Archemedes did it?

Also, sines and cosines are defined as a ratio of sides, and don't actually require a knowledge of pi unless you're already working in radians.
by teacupthesauceror
Thu Jun 30, 2011 3:32 pm UTC
Forum: Mathematics
Topic: Precedence of a^b^c
Replies: 15
Views: 3814

Re: Precedence of a^b^c

It's a general rule of thumb that if your operation is not commutative, you work from right to left. So you have c, you go left and do b^c, and then with that answer you go left again and use the answer to the first part to do the second part, so you have a^(b^c). In fact, the general rule is the o...
by teacupthesauceror
Thu Jun 30, 2011 3:27 pm UTC
Forum: Mathematics
Topic: How do you explain 1/infinity != 0?
Replies: 17
Views: 7528

Re: How do you explain 1/infinity != 0?

as infinity is (I think) defined to be $$\infty = \lim_{x \rightarrow 0} \frac{1}{x}$$, so 1 over the limit of something that tends to infinity is 0. That particular limit doesn't exist, as coming at it from the left gets you negative infinity. Tossing in some absolute value bars around x or just t...
by teacupthesauceror
Thu Jun 30, 2011 3:14 pm UTC
Forum: Mathematics
Topic: What I Wish I Knew at the Beginning of my Math Degree
Replies: 21
Views: 4682

Re: What I Wish I Knew at the Beginning of my Math Degree

I'm amazed at the amount of contact you guys have with your supervisors. Maybe it's the stiff upper lips getting in the way, but there seems to be a general agreement that a five-minute meeting a few times a year is more than enough contact for someone not applying for mitigating circumstances. The...
by teacupthesauceror
Thu Jun 30, 2011 6:16 am UTC
Forum: Serious Business
Topic: Morals in Evolutionary Game Theory
Replies: 23
Views: 4792

Re: Morals in Evolutionary Game Theory

What we seem to have established here is that Hollywood Nash Theory is the "best", if most impractical situation. And now I know that actually Nash Equilibria are not nice and left-wing, for which I thank you. HNT does, however, make better cinema. Now we need to decide how Utilitarian our...
by teacupthesauceror
Thu Jun 30, 2011 6:08 am UTC
Forum: Mathematics
Topic: Precedence of a^b^c
Replies: 15
Views: 3814

Re: Precedence of a^b^c

It's a general rule of thumb that if your operation is not commutative, you work from right to left. So you have c, you go left and do b^c, and then with that answer you go left again and use the answer to the first part to do the second part, so you have a^(b^c).
by teacupthesauceror
Thu Jun 30, 2011 5:54 am UTC
Forum: Serious Business
Topic: Morals in Evolutionary Game Theory
Replies: 23
Views: 4792

Re: Morals in Evolutionary Game Theory

I'm sorry, but how are Defectors and Jokers necessary? Obviously, it's better for an individual to be a Defector rather than a Contributor, but in systems where everyone is able to contribute, they are not necessary. If not everyone has the skill to be a Contributor, or there is limited production c...
by teacupthesauceror
Thu Jun 30, 2011 5:31 am UTC
Forum: Mathematics
Topic: How practical is a B.S. in Math?
Replies: 20
Views: 7895

Re: How practical is a B.S. in Math?

Also, you can get jobs not related at all to Mathematics with a BSci in Mathematics! Getting a degree in anything allows you to enter the corporate ladder on a higher rung than if you have no degree at all. So actually, "useless" degrees aren't actually useless, and people respect people w...
by teacupthesauceror
Thu Jun 30, 2011 5:21 am UTC
Forum: Mathematics
Topic: What I Wish I Knew at the Beginning of my Math Degree
Replies: 21
Views: 4682

Re: What I Wish I Knew at the Beginning of my Math Degree

Having completed my first year, I can say: - There is a limit to correcting lecturers. Don't make the class lose respect for them, or nobody will learn. - Sleep is a glorious thing. - Even those who "don't work" work. We just don't like to admit it. - Making the most of my doss year was th...
by teacupthesauceror
Thu Jun 30, 2011 4:39 am UTC
Forum: Mathematics
Topic: How do you explain 1/infinity != 0?
Replies: 17
Views: 7528

Re: How do you explain 1/infinity != 0?

It's the same reason 0.999... = 1, an infintessimal amount is equivalent to zero (well, not exactly, but to all intents and purposes, it is). This is because an infintessimal, like infinity, is not a number, it is a limit that tends to 0. They only start to add to numbers that aren't 0 when you have...
by teacupthesauceror
Thu Jun 30, 2011 4:15 am UTC
Forum: Serious Business
Topic: Strong AI and simulations
Replies: 11
Views: 3352

Re: Strong AI and simulations

"Strong AI is artificial intelligence that matches or exceeds human intelligence." By this definition, if we are in simulation we, or some people we know, are probably strong AI, who have not yet found their way out of the box. (We're trying though, hologram theory might do it). I do agree...
by teacupthesauceror
Fri Jun 24, 2011 2:44 am UTC
Forum: Serious Business
Topic: Rising Cost of living in the UK*
Replies: 20
Views: 4077

Re: Rising Cost of living in the UK*

You misunderstand. I don't mean redistribute the money evenly, just have a global welfare system. And a PHS (Planetary Health System). Essentially, tax and benefits are worked out globally.

According to two posts up, this requires alien invasion, so I'm going to try and hack SETI for world peace.
by teacupthesauceror
Thu Jun 23, 2011 7:24 pm UTC
Forum: Serious Business
Topic: Rising Cost of living in the UK*
Replies: 20
Views: 4077

Re: Rising Cost of living in the UK*

Essentially, what it seems to come down to is redistribution of wealth. For this to be effective on a global scale, we need a sort of global welfare state that can take money from the highest earners and use it to help the lowest earners climb up the scale, in a more structured way than charities do...
by teacupthesauceror
Thu Jun 23, 2011 8:34 am UTC
Forum: Serious Business
Topic: Rising Cost of living in the UK*
Replies: 20
Views: 4077

Re: Rising Living Standars in the UK

Okay, back up a sec. First off, you're assuming the future follows linearly from the present. This is only valid as an approximation for a short time period, and thereafter becomes absurd extrapolation. By the time you are postulating only the rich will be able to survive, businesses will realise th...
by teacupthesauceror
Sun May 15, 2011 2:26 pm UTC
Forum: Serious Business
Topic: Is it right to design weapons?
Replies: 134
Views: 19855

Re: Is it right to design weapons?

Let's not forget that weapons aren't just used in wars. New and better types of gun are eventually going to be placed in the hands of civilians, whether legally or illegally. And guns kill people. While people are responsible for this, it's a lot harder to kill someone with a sword or spatula, or ev...
by teacupthesauceror
Sat May 14, 2011 2:06 pm UTC
Forum: Serious Business
Topic: Debates and curiosity/intellect
Replies: 18
Views: 3322

Re: Debates and curiosity/intellect

Because you're wrong, and I need to make you see that through the medium of words. Seriously, though, I debate because I cannot see all sides of the issue myself. Sometimes something comes in from left field that completely changes my view on something, sometimes my views are strengthened when I bre...
by teacupthesauceror
Sat May 14, 2011 1:55 pm UTC
Forum: Mathematics
Topic: If you learned statistics would you never buy insurance?
Replies: 92
Views: 10993

Re: If you learned statistics would you never buy insurance?

Wait, back up a minute. Someone said "the chance [of crashing] goes up every time you go out and don't crash a car." Conditional probability, guys. If we say car-crashes go on a poisson distribution in the same way earthquakes or ice ages do, then the distribution is memoryless and the cha...
by teacupthesauceror
Fri May 13, 2011 11:32 am UTC
Forum: Mathematics
Topic: Is f(-x) convex?
Replies: 7
Views: 1859

Re: Is f(-x) convex?

Proof by intuition: f(x) is convex, by which I assume you mean bulges upwards in the y-direction, like an upside-down bucket. f(-x) is reflected in the y-axis, reversing all the x-direction properties but leaving the y-direction untouched. This can easily be seen if you sketch the graph. Unless it's...
by teacupthesauceror
Thu May 12, 2011 6:51 pm UTC
Forum: Mathematics
Topic: Problem-Solving Ability
Replies: 5
Views: 1535

Re: Problem-Solving Ability

Creative things have a problem-solving process of their own. Trying to make a person/cathedral/robot from basic shapes, or trying to get a person from the elven forest to the dwarf kingdom in an exciting way in less than 5,000 words are both challenges with constraints, if not definite solutions. I'...
by teacupthesauceror
Thu May 12, 2011 6:02 pm UTC
Forum: Mathematics
Topic: Equation for Permutations of Game of Chess ?
Replies: 14
Views: 11508

Re: Equation for Permutations of Game of Chess ?

Even Deeper Blue didn't solve chess, and it was a chess grand master. Checkers/draughts is soluable, I think, because the pieces are identical, which makes things many millions of times simpler. Viking chess (Hneftafl) is also simpler in mathematical terms, with all pieces of a side (apart from the ...
by teacupthesauceror
Tue May 12, 2009 3:10 am UTC
Forum: Science
Topic: DNA and a population
Replies: 39
Views: 3411

Re: DNA and a population

Yes. Even if the time allotted is not infinity, without mutations there are only a finite number of sequences genes, which is, of course, something in he region of genes!, or possibly genes genes . After a long enough period of time, there will be repetitions. Heck, I once saw the number of arrange...
by teacupthesauceror
Tue May 12, 2009 3:03 am UTC
Forum: Mathematics
Topic: Why is calculus considered so complex?
Replies: 64
Views: 7167

Why is calculus considered so complex?

This may be an odd bit of cultural osmosis but I've always found TV to consider calculus a really difficult bit of maths. Maybe it's because it's the last bit of maths people do in school, but am i missing something here? So far it's been mainly formulas. And quite simple ones too. Of course, counte...
by teacupthesauceror
Tue May 12, 2009 2:58 am UTC
Forum: Mathematics
Topic: Help! I'm trying to get a 14 year old interested in Maths.
Replies: 52
Views: 7115

Re: Help! I'm trying to get a 14 year old interested in Maths.

Carrying on from fractals, the Sapinsky Gasket and the fact that it has 1.6 dimensions and can be found by colouring in all the odd numbers on Pascal's Triangle drawn on isometric paper. Does anyone know why this happens?
by teacupthesauceror
Tue May 12, 2009 2:37 am UTC
Forum: Science
Topic: DNA and a population
Replies: 39
Views: 3411

Re: DNA and a population

Yes. Even if the time allotted is not infinity, without mutations there are only a finite number of sequences genes, which is, of course, something in he region of genes!, or possibly genes genes . After a long enough period of time, there will be repetitions. Heck, I once saw the number of arrangem...
by teacupthesauceror
Tue May 12, 2009 2:30 am UTC
Forum: Science
Topic: Why isn't EMP lethal?
Replies: 16
Views: 3986

Re: Why isn't EMP lethal?

Neurons actually work through chain chemical reactions.

Just saying.
by teacupthesauceror
Tue May 12, 2009 2:14 am UTC
Forum: Mathematics
Topic: Help! I'm trying to get a 14 year old interested in Maths.
Replies: 52
Views: 7115

Re: Help! I'm trying to get a 14 year old interested in Maths.

Bases and logarithms are awesome things and should get anybody interested in Maths. Other than that, topology, especially the weird stuff, should give them food for thought, like trying to construct a shape with one side and one edge. I still haven't managed to do that... But basically, start with D...
by teacupthesauceror
Thu May 07, 2009 6:03 pm UTC
Forum: Mathematics
Topic: Favorite math jokes
Replies: 1452
Views: 494570

Re: Favorite math jokes

I made this one up just now:

There are 4 types of scientists in this world: economists, physicists, mathematicians,

It may need some work...
by teacupthesauceror
Wed May 06, 2009 9:25 pm UTC
Forum: Science
Topic: Chemistry Demonstrations
Replies: 56
Views: 6385

Re: Chemistry Demonstrations

I'll chalk this up to "school science is wrong" again. Every year we're told that something is impossible, except when it isn't, but you'll learn that next year. Can we at least agree C 6+ doesn't exist normally in isolation? (Yeah, it's childish, but I want to get at least one thing right...
by teacupthesauceror
Wed May 06, 2009 7:51 pm UTC
Forum: Science
Topic: Chemistry Demonstrations
Replies: 56
Views: 6385

Re: Chemistry Demonstrations

And there is no Cr 6+ There is dichromate(VI), where the VI is the ox. no, but anything bigger than a 3+ ion is rare (i.e. "impossible" until degree level), and 6+ is all kinds of silliness. Although seeing as ox. nos are linked to ion charges anyway, it's easy to get confused. Apparently...
by teacupthesauceror
Wed May 06, 2009 7:20 pm UTC
Forum: Mathematics
Topic: Conceptual math (just a random thought)--
Replies: 13
Views: 1925

Re: Conceptual math (just a random thought)--

infinity + 1 = infinity

There IS a number bigger than infinity, "transfinity" or something, but you have to stop thinking of infinity as having a value, or logic will implode.
by teacupthesauceror
Wed May 06, 2009 6:46 pm UTC
Forum: Science
Topic: Chemistry Demonstrations
Replies: 56
Views: 6385

Re: Chemistry Demonstrations

And there is no Cr 6+ There is dichromate(VI), where the VI is the ox. no, but anything bigger than a 3+ ion is rare (i.e. "impossible" until degree level), and 6+ is all kinds of silliness. Although seeing as ox. nos are linked to ion charges anyway, it's easy to get confused. Apparently...
by teacupthesauceror
Wed May 06, 2009 4:25 pm UTC
Forum: Science
Topic: A 4th Dimension
Replies: 39
Views: 4983

Re: A 4th Dimension

The fourth dimension is lunchtime. Your idea of pockets works in principle, but it's much easier to describe four-dimensional objects mathematically than visualise them. A four-dimensional hypercube has 8 cubic spaces, 16 faces, 32 edges and 16 vertices. Now try and picture that in your brain withou...
by teacupthesauceror
Wed May 06, 2009 4:20 pm UTC
Forum: Science
Topic: Comical mistakes in your homework.
Replies: 144
Views: 17790

Re: Comical mistakes in your homework.

6/7 + 3/7 =11/7 26/2 = 14 200/100 = 4 And these were all on tests as well, although the middle one isn't mine. Maybe genius mathematicians are too busy learning the fun stuff to do arithemetic? And my Physics textbook is riddled with mistakes. The formula of ethene is C 2 H 2 , apparently, and E = .
by teacupthesauceror
Wed May 06, 2009 4:08 pm UTC
Forum: Science
Topic: Chemistry Demonstrations
Replies: 56
Views: 6385

Re: Chemistry Demonstrations

Also, with the dichromate, I'm fairly sure we used that in our oxidation, and dissolved it ourselves. Then again, we also used conc (well, school-conc) sulfuric acid for that one, and our chemistry teacher believes safety is having goggles on and a bottle of thio lying around. And there is no Cr 6+ ...

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