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0celo7

01:24

@ACuriousMind you seriously don't know what ayy lmao means

ACuriousMind

@0celo7 Nope. I'm a million years old apparently.

0celo7

did you google it?

ACuriousMind

@0celo7 Yes

0celo7

well now you know

you know, if you just browsed /b/ occasionally you'd get hip to a lot of things

ACuriousMind

01:39

@0celo7 Not sure I want to "get hip" to things ;P

0celo7

user54412

@ACuriousMind That might be. I'm also not able to cast a delete vote on it, I guess also because it has a positive score.

Secret

02:02

Some discoveries are accidents

and it seems I have taken this principle too far that I can generate a question from misreading a tutorial exercise

For example:
http://math.stackexchange.com/questions/1333928/solving-for-the-spectrum-and-eigenvectors-of-the-shift-operator-t-in-p-3

0celo7

02:25

JD hasn't been around lately...

Secret

02:48

It's near the end of the semester here, I am not sure if it is the start of another term in the northern hemisphere

but otherwise, chat is pretty quiet in the afternoon (based on Syd time)

dmckee

03:15

@Secret My school just issued fall midterm grades. But we start fairly early for US schools.

0celo7

04:03

@dmckee I haven't had midterms yet, but some people here have done all of them already.

It varies by class.

2 hours later…

Danu

05:37

@ACuriousMind I think so

6 hours later…

Slereah

11:08

@0celo7 good

2 hours later…

Secret

12:50

We know dark matter can act as a gravitational lens, and we know the CMB will be bent by it.

But how back in history do we first map out the dark matter distributions given we don't even know how the undistorted CMB look like to work out whether some distorted features on the CMB as detected by our telescopes are due to some massive invisible stuff or it just happens that's how that patch of the CMB look like?

Slereah

The CMB is supposed to be basically isotropic and homogeneous

Secret

so we map out the dark matter distribution with the assumption that the undistorted CMB is isotropic?

Slereah

13:13

Not a clue

I'm not very good at experimental physics

0celo7

13:43

@Slereah :(

Slereah

If you want to see cranks try ##physics on freenode :p

We get some once in a while

0celo7

14:03

> crank

bona-fide physics ffs

0celo7

15:01

@ACuriousMind How're you enjoying ~~BBS~~ your paperweight?

2 hours later…

user54412

17:06

The Ĝ Search for Extraterrestrial Civilizations with Large Energy Supplies. IV. The Signatures and Information Content of Transiting Megastructures

user54412

@Danu see above -- these are actually reputable exoplanet people too

user54412

forget finding Earth-like planets, everyone's now focused on finding Kardashev Type II civilizations and their Dyson spheres

0celo7

17:56

@ChrisWhite Reputable exoplanet people?

0celo7

18:11

Wow PS4 is $330 at Costco

dmckee

18:56

Today's xkcd will be of endless use around here:

The no-communication theorem states that no communication about the no-communication theorem can clear up the misunderstanding quickly enough to allow faster-than-light signaling.

0celo7

What is Bell's theorem about

dmckee

@0celo7 It shows that quantum theories that are both local and realistic are experimentally distinguishable form those that fail to have at least one of those properties.

With experiments done by Aspect et al and other groups it shows that the actual QM is in the "fails to have at least one of those properties" group. Unless you are willing to assume some fairly conspiratorial seeming properties to fit through the increasingly confined loopholes.

0celo7

Is "the world is a simulation" considered conspiratorial?

Because it is :^)

0celo7

19:28

@dmckee So what misunderstandings of the theorem are there?

skull petrol

"The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man." (George Bernard Shaw)

dmckee

20:20

@0celo7 It implies the various delayed choice experiments, and the first time they hear about those almost everyone leaps to the notion that they imply FTL comm.

@0celo7 Well, yeah. But not necessarily in the sense I meant. Of course, universe as simulation implies a means of implementing the conspiratorial physics if the Great Programmer wanted.

skull petrol

What language does He program in? :-D

Insert Galileo quote <here>

user54412

20:35

@dmckee Randall Munroe once again so eloquently expresses my thoughts.

user54412

I'm trying to restrain myself from posting that link below every "doesn't entanglement allow FTL communication?" question on the site.

dmckee

The hover-over text is brilliant.

Ghost

20:49

good morning!

0celo7

Morning?

Where do you live?

Ghost

I live in Australia

you?

0celo7

see my profile

Ghost

ahh very impressive

0celo7

@ChrisWhite call me stupid, but I don't get why it doesn't

user54412

21:05

A: Why does the speed of light totally prevent instantaneous information exchange?

The thing about the speed of light $c$ is that it's not just a number associated with a certain type of particle. While we could talk about the mass of the proton, and there would be no problem assuming non-protons had greater or lesser masses, the value $c$ is an entirely different beast. $c$ i...