## Search found 847 matches

Sun May 26, 2013 9:10 pm UTC
Forum: Mathematics
Topic: Difficulty with a factoring problem in precalculus
Replies: 4
Views: 2917

### Re: Difficulty with a factoring problem in precalculus

While 16-x^4 is indeed a difference of squares, what you have at that stage is actually 16-x^4(x-1)^2, which also happens to be a difference of squares, but a different one from what you did.

Do you have a final answer you're trying to get, or how did you know something was wrong?
Sat May 25, 2013 7:54 pm UTC
Forum: Science
Topic: Boiling Noodles at Room Temperature
Replies: 23
Views: 8738

### Re: Boiling Noodles at Room Temperature

Cooking really is just edible chemistry. Recipes and what tastes good isn't really relevant here, but "You shouldn't keep bread in the fridge because <chemical reaction I don't recall right now> occurs." and the like is definitely science. Related, I've always been bothered when people cas...
Wed May 22, 2013 9:21 pm UTC
Forum: Science
Topic: Likelihood of existence of alternate universes?
Replies: 78
Views: 17259

### Re: Likelihood of existence of alternate universes?

I feel like this is going to depend heavily on how you're defining 'universe'.
Wed May 22, 2013 8:06 pm UTC
Forum: Fictional Science
Topic: Teleportation Destroying Energy
Replies: 20
Views: 8241

### Re: Teleportation Destroying Energy

I'm confident careful analysis of whatever mechanism is used to do the teleportation would reveal the 'missing' energy. If that mechanism happens to be 'magic', then the missing energy can 'magicly' appear elsewhere (most intuitively in the teleportation machine in the form of heat, but I wouldn't t...
Thu May 16, 2013 10:18 pm UTC
Forum: Science
Topic: D-Wave Quantum Computer
Replies: 5
Views: 3651

### Re: D-Wave Quantum Computer

You can simulate n qubits with 2^n classical bits, so they're equivalent in the sense you could simulate a quantum based algorithm using 2^n classical bits. I don't think you could implement a classical algorithm that'd normally require 2^n bits on n qubits however. Also, even if you had 2^n bits to...
Thu May 16, 2013 2:26 am UTC
Forum: Coding
Topic: 6 Second JavaScript Lessons
Replies: 9
Views: 8166

### Re: 6 Second JavaScript Lessons

D-503 wrote:You can pause by clicking on the videos.

Hum. Doesn't seem to work for me in firefox at least.
Wed May 15, 2013 7:04 pm UTC
Forum: Science
Topic: Designing a (Totally) self sufficient Mars colony
Replies: 245
Views: 39680

### Re: Designing a (Totally) self sufficient Mars colony

Gamers are pretty talented if you give them gamerscore for it. Wasn't there some story relatively recently about there being a protein folding game where crowd sourcing gamers managed to get the optimal thing much faster than getting computers/actual biologists to try and figure it out? In any case,...
Wed May 15, 2013 4:38 am UTC
Forum: Coding
Topic: 6 Second JavaScript Lessons
Replies: 9
Views: 8166

### Re: 6 Second JavaScript Lessons

Is there no way to pause? :shock: I don't know Javascript, but I have some coding experience so maybe armed with the ability to pause I might be able to glean some information out of those 6 second clips (that is to say, basic syntax and maybe what functions are built-in), but currently by the time ...
Tue May 14, 2013 2:15 am UTC
Forum: Science
Topic: Evolution question - how does complexity arise?
Replies: 201
Views: 29238

### Re: Evolution question - how does complexity arise?

I'm pretty sure lady folk don't lay down and die after they pass menopause and their children have all moved on to be self-sufficient, so theres probably some motivations that don't just lead back to reproduction. Still, our motivations as a species don't necessarily have to be identical to our moti...
Fri May 10, 2013 4:38 am UTC
Forum: Gaming
Topic: Cool games on the interweb redux
Replies: 514
Views: 333029

### Re: Cool games on the interweb redux

Beat the normal mode and am now poking at hard mode. Reluctant to use berserk potions, but not sure what I can really do to progress otherwise. :? Maybe another weapon upgrade or two will do the trick, but I don't really have Mlp's to throw around at this stage of the game. Weapon strength i...
Thu May 02, 2013 12:22 am UTC
Forum: Mathematics
Topic: Is Who wants to be a millionaire just a game of luck?
Replies: 21
Views: 7413

### Re: Is Who wants to be a millionaire just a game of luck?

Hmm, well 1:1 odds is kinda like 1/1, which reduces to 1 or 100%. One would think when you arrive at that conclusion that you'd recognise something was wrong with your reasoning, but apparently not. Figuring out the probability of winning given the probability you know the answer decreases as a func...
Thu Apr 25, 2013 11:04 pm UTC
Forum: Science
Topic: Uncertainty Questions
Replies: 4
Views: 1218

### Re: Uncertainty Questions

You start with an entangled state |psi>= A|+Z,+Z> + B|-Z,-Z> or A|+Z,-Z> + B|-Z,+Z>, for some suitable constants. Note that it's only one of those two possible starting states, otherwise you weren't actually starting with an entangled state. Let's assume it was the first one, but either works as lon...
Thu Apr 25, 2013 9:49 pm UTC
Forum: Science
Topic: Uncertainty Questions
Replies: 4
Views: 1218

### Re: Uncertainty Questions

These diagrams basicly show what happens. Basically, a measurement of the spin in the z basis will put the particle into a superposition of the two possibilities of spin in the x basis. It's not the case that the particle had a certain x spin and a certain z spin before hand, it really can be 'both...
Mon Apr 22, 2013 5:04 pm UTC
Forum: Science
Topic: the theoritical limit of human population
Replies: 17
Views: 3547

### Re: the theoritical limit of human population

If technology is magically removing space/food considerations, theres no reason technology can't get off-world elemental resources as well anyway.
Sun Apr 21, 2013 2:09 am UTC
Forum: Science
Replies: 21
Views: 2016

Even in a classical world, our tools of measuring are always going to be imperfect, and even tiny imperfections are gonna bloom chaotically so we have no idea what happened in the past once you look too far.

Unless I'm misremembering some thing about the course I wasn't officially in anyway.
Sat Apr 20, 2013 1:04 am UTC
Forum: Science
Topic: the theoritical limit of human population
Replies: 17
Views: 3547

### Re: the theoritical limit of human population

I don't think running out of the elemental building blocks is ever going to be the limiting factor. Food supply and crowding would end up being far more problematic.

Wiki has this on the carrying capacity of the earth for humans.
Sat Apr 13, 2013 4:10 pm UTC
Forum: Science
Replies: 24
Views: 6945

It might give you some comfort (or maybe it'll make things worse...) to consider that dimensions can look the same but not cancel. For example, you might calculate 1 mole h2o/1 mole atomic oxygen and consider it dimensionless since it's moles/moles, but that can get people into trouble when they goi...
Sat Apr 13, 2013 1:37 am UTC
Forum: Mathematics
Topic: Can someone write me an algorithm?
Replies: 8
Views: 2042

### Re: Can someone write me an algorithm?

I think OKCupid used to (or possibly still do) have stats on that sort of thing that basically amounted to looking through all the users entries for that section (or a similar one) looking for certain keywords/phrases. If you had access to that sort of data I'm sure someone could do that sort of thi...
Thu Apr 11, 2013 12:41 pm UTC
Forum: Science
Topic: How do you round 1.5 ?
Replies: 35
Views: 10618

### Re: How do you round 1.5 ?

I believe in my schools, right up to late high school no one cared how you rounded or how many sig figs you had (so throw down a dozen digits despite only 2 being significant), then late high school they cared about sig figs but didn't care precisely (so if you had only 1 sig fig, rounding 1.5 to 1 ...
Wed Apr 10, 2013 6:08 pm UTC
Forum: Science
Topic: How do you round 1.5 ?
Replies: 35
Views: 10618

### Re: How do you round 1.5 ?

eSOANEM wrote:Digital multimeters.

I have never used one of those that didn't wobble around a value like crazy, in which case one could lean in the direction it sems to wobble more.

That might be reflective of the quality of multimeter I've used in the past though.
Wed Apr 10, 2013 5:19 pm UTC
Forum: Science
Topic: How do you round 1.5 ?
Replies: 35
Views: 10618

### Re: How do you round 1.5 ?

If the number represents things (i.e. things you can only practically have an integer of) I'm inclined to round up, even if it's something like 1.0001 because usually too much is better than too little. Otherwise when faced with 1.5, I tend to opt for the round to even approach. It's a simple rule, ...
Tue Apr 02, 2013 2:25 pm UTC
Forum: General
Replies: 315
Views: 72572

My time in the fridge was cool.
Tue Apr 02, 2013 3:16 am UTC
Forum: General
Replies: 315
Views: 72572

Or you could randomly mod people during the event. We wouldn't ruin everything...

Or you could give us all enough alcohol that everything looks unreadable even without filters. That'd be cool.
Tue Apr 02, 2013 1:05 am UTC
Forum: General
Replies: 315
Views: 72572

This seems like it was one of the tamest ones yet. I recall by the end of last years' there was very little hope of understanding any given post, while this year even at the end things were mostly understandable even without mentally translating to the unfiltered version.
Mon Apr 01, 2013 2:10 am UTC
Forum: General
Replies: 315
Views: 72572

### Re: THE RECKONING cometh

Is there a good reason for why it works like that? My niave non php knowledgable self feels like it should be just as easy to html magic replace stuff in quote="whoever" as with quote="whoever":rabble.

Also, that post was far too legible. moar filters are needed.
Sun Mar 31, 2013 4:06 pm UTC
Forum: General
Replies: 315
Views: 72572

### Re: THE RECKONING COMES

By the end there is only ashes and dangling parenetheses.(
Sat Mar 30, 2013 3:03 am UTC
Forum: General
Replies: 315
Views: 72572

### Re: THE RECKONING COMES

Alcohol is a most excellent idea to accompany these coming days. I shall raid the stores.
Sat Mar 30, 2013 12:44 am UTC
Forum: Science
Topic: 4th Dimensional Species (time travel)
Replies: 9
Views: 2644

### Re: 4th Dimensional Species (Things that are on my side for

I'm just gonna leave this here so I can come back and decipher things at some point in the future.
Fri Mar 29, 2013 3:56 pm UTC
Forum: General
Replies: 315
Views: 72572

### Re: THE RECKONING COMES

This thread can't tell if it wants the posts I've read to not be marked read (which is expected since annoucements are wonky), but also seems to randomly marking things I haven't read as read. Witchcraft I say! Possibly post approval shinanigans going on too, but I feel witchcraft is much more likely.
Fri Mar 29, 2013 3:45 pm UTC
Forum: General
Replies: 315
Views: 72572

### Re: THE RECKONING COMES

A Rosetta Stone of sorts for the madness would be interesting to see some of the more obscure linguistic backflips...
Fri Mar 29, 2013 3:28 pm UTC
Forum: General
Replies: 315
Views: 72572

### Re: THE RECKONING COMES

Mishrak wrote:Wait, you be taking SexyTalon's handcuffs off? Nooooooooo.

I woll now go hide in a corner.

Pink furry cuffs for everyone!
Thu Mar 28, 2013 6:34 pm UTC
Forum: General
Replies: 315
Views: 72572

It's that time already? Better find the silly hats.
Tue Mar 26, 2013 10:54 pm UTC
Forum: School
Topic: How to make teachers friendlier and easier to talk to?
Replies: 16
Views: 14396

### Re: How to make teachers friendlier and easier to talk to?

For professors who hold office hours or optional tutorials, I found going to those almost always lead to good relationships with the profs in question, and would eventually drift off to a more friendly chat towards the end instead of strictly class material stuff. I suspect part of that is the profe...
Sun Mar 24, 2013 4:31 am UTC
Forum: Science
Topic: [Physics] If electrons where tiny spheres... what?
Replies: 27
Views: 4573

### Re: [Physics] If electrons where tiny spheres... what?

Theres a bit more too it than that, in that it really really doesn't have a well defined momentum/position before measurement 1 , as opposed to it having a well defined position but we don't know what it was because our measurement changed it. Thinking of it as it being an issue with our measurement...
Fri Mar 22, 2013 9:00 pm UTC
Forum: Science
Topic: Soylent (not the people variety)
Replies: 46
Views: 25762

### Re: Soylent (not the people variety)

That all sounds a little too good to be true, and may be more psychological in nature. You can do pretty good just throwing stuff into a blender and spawning a smoothie that probably doesn't taste horrible if you don't feel like making a proper meal. Mixing up a batch of stuff that is probably bland...
Thu Mar 21, 2013 3:13 am UTC
Forum: Coding
Topic: Coding: Fleeting Thoughts
Replies: 10016
Views: 2036438

### Re: Coding: Fleeting Thoughts

What's the appropriate approach to learning/using libraries (including the standard library)? (Primarily thinking of C/C++ but it's probably similar in general). Skim through the documentation of all the things so you have a sense of what tools are available? There are a lot of things out there, so ...
Tue Mar 19, 2013 2:02 am UTC
Forum: Science
Topic: Physics question my professor couldn't answer
Replies: 49
Views: 6365

### Re: Physics question my professor couldn't answer

Angular momentum is weird enough without mistakes...you apply a force in one direction (center of circle), to get motion in a different direction (perpendicular to the force no less), and end up with the angular momentum itself pointed in yet another direction (perpendicular to both the others!). Th...
Sun Mar 17, 2013 9:35 pm UTC
Forum: Gaming
Topic: Runescape
Replies: 2
Views: 965

### Re: Runescape

I don't understand why there's so much hate towards Runescape out there. I know everyone has their own MMO of choice (and most of the time it's WoW), but a lot of MMO dicussions seem to refer to Runescape as some horrible black sheep of MMO's, and this confuses me. The graphics may have been pretty ...
Sat Mar 16, 2013 7:28 pm UTC
Forum: Science
Topic: Why is the body plan so consistent through evolution?
Replies: 83
Views: 10625

### Re: Why is the body plan so consistent through evolution?

Would I be terribly wrong in thinking evolution tends towards local efficiency maximums (with respect to changes in body plan) rather than global maximums, or would that be over simplifying things?
Fri Mar 15, 2013 6:35 pm UTC
Forum: Science
Topic: Physics question my professor couldn't answer
Replies: 49
Views: 6365

### Re: Physics question my professor couldn't answer

Are you getting at the business of angular momentum being 'stored' in EM fields, or is that a seperate bit of shinanigans I'm vaguely recollecting?