SERVING THE QUANTITATIVE FINANCE COMMUNITY

 
User avatar
quantmeh
Posts: 5974
Joined: April 6th, 2007, 1:39 pm

Dark Matter Is Crap

July 10th, 2012, 6:12 pm

QuoteOriginally posted by: Traden4AlphaYou take someone suspected of having a peanut allergy and expose them to a powder, liquid, or skin-prick injection that may or may not have peanuts in it and observe anaphilactic shock?you see what i mean? they don't observe the shock, they'll look at a little skin redness, then extrapolate to a shock. it's like computing stress loss (VaR) using greeks. you know gaussian copula sounds more convincing that this method.
 
User avatar
quantmeh
Posts: 5974
Joined: April 6th, 2007, 1:39 pm

Dark Matter Is Crap

July 10th, 2012, 6:29 pm

QuoteOriginally posted by: outrunWho on Earth came up with this "double blind" weirdness?!bio-statisticians - nut-heads and charlatans
 
User avatar
Traden4Alpha
Posts: 23951
Joined: September 20th, 2002, 8:30 pm

Dark Matter Is Crap

July 10th, 2012, 6:32 pm

QuoteOriginally posted by: quantmehQuoteOriginally posted by: Traden4AlphaYou take someone suspected of having a peanut allergy and expose them to a powder, liquid, or skin-prick injection that may or may not have peanuts in it and observe anaphilactic shock?you see what i mean? they don't observe the shock, they'll look at a little skin redness, then extrapolate to a shock. it's like computing stress loss (VaR) using greeks. you know gaussian copula sounds more convincing that this method.There's a full spectrum of observable responses including itching, anxiety, hives, swelling, difficulty breathing, heart rhythm disturbances, etc. In some cases, they observe shock and I read that in at least one study, a test subject died. There's also blood tests for allergies that look for a measurable reaction by the patient's blood to the suspected antigen.But you are right that it's inexact in the sense that no one can determine that a given patient can always tolerate X milligrams of peanuts but die if exposed to X+epsilon milligrams of peanuts.
 
User avatar
Traden4Alpha
Posts: 23951
Joined: September 20th, 2002, 8:30 pm

Dark Matter Is Crap

July 10th, 2012, 6:37 pm

QuoteOriginally posted by: outrunQuoteOriginally posted by: Traden4AlphaQuoteOriginally posted by: outrunHow does one establish peanut butter allergy double blind-ish? ...and with those low frequencies..You take someone suspected of having a peanut allergy and expose them to a powder, liquid, or skin-prick injection that may or may not have peanuts in it (and neither the patient nor the nurse/doctor/experimenter knows if it's peanut or no-nut) and see if they react. You also run the same test on a matched population of people who seem to have no problems eating peanuts.Aha! So you *first* classify people into allerics and non-allergics with some non-double blind test, and then double blind test them, makes sense.However, maybe some people are allergic to protons and you would classify those as peanuts allergic with this method. Who on Earth came up with this "double blind" weirdness?!If a suspected peanut allergy sufferer is allergic to protons, then they will react to the peanut-free version of the test. In theory, the only difference between the two test serums is the presence of peanuts (and the telekinetic abilities of the serum mixer who uses telepathy to follow the peanut-version of the serum to the patient and give that patient a reaction).
 
User avatar
quantmeh
Posts: 5974
Joined: April 6th, 2007, 1:39 pm

Dark Matter Is Crap

July 10th, 2012, 6:49 pm

QuoteOriginally posted by: Traden4Alphaand the telekinetic abilities of the serum mixer who uses telepathy to follow the peanut-version of the serum to the patient and give that patient a reaction).that's proven, called homeopathy
 
User avatar
Traden4Alpha
Posts: 23951
Joined: September 20th, 2002, 8:30 pm

Dark Matter Is Crap

July 10th, 2012, 7:09 pm

QuoteOriginally posted by: outrunQuoteOriginally posted by: Traden4AlphaQuoteOriginally posted by: outrunQuoteOriginally posted by: Traden4AlphaQuoteOriginally posted by: outrunHow does one establish peanut butter allergy double blind-ish? ...and with those low frequencies..You take someone suspected of having a peanut allergy and expose them to a powder, liquid, or skin-prick injection that may or may not have peanuts in it (and neither the patient nor the nurse/doctor/experimenter knows if it's peanut or no-nut) and see if they react. You also run the same test on a matched population of people who seem to have no problems eating peanuts.Aha! So you *first* classify people into allerics and non-allergics with some non-double blind test, and then double blind test them, makes sense.However, maybe some people are allergic to protons and you would classify those as peanuts allergic with this method. Who on Earth came up with this "double blind" weirdness?!If a suspected peanut allergy sufferer is allergic to protons, then they will react to the peanut-free version of the test. In theory, the only difference between the two test serums is the presence of peanuts (and the telekinetic abilities of the serum mixer who uses telepathy to follow the peanut-version of the serum to the patient and give that patient a reaction).Maybe the peanut butter allergics have a brain bit that makes then chew chinese cat eye chewing gum when they get nervous before an injection, which is known to react heavily with placebos in the absence of the neutralizing peanut butter. How are they taking care of that type of situations?Absolutely! Test subjects are isolated in a sealed Schrödinger's cat box with a radioactive peanut. If they die, we know that their wave function was coupled to the peanut. If we open the box and find non-uniform slices of the peanut, then we know they don't want to participate in the documentary film. Right?
 
User avatar
rmax
Posts: 6080
Joined: December 8th, 2005, 9:31 am

Dark Matter Is Crap

July 10th, 2012, 7:36 pm

QuoteOriginally posted by: quantmehQuoteOriginally posted by: rmaxQuoteOriginally posted by: quantmehQuoteOriginally posted by: rmax1/ Electrons don't have any form of colour2/ They are wave particles.you're contradicting yourself. waves can be mapped to colors, by their wavelength, here's the proofLOL. Those are waves of photons. Not waves of electrons.no, all subatomic particles are waves, they have a wave length. electrons are waving like guitar strings, i'm sure you can make them sound like music to CERN's "scientists". here's the proof Errr no.
 
User avatar
quantmeh
Posts: 5974
Joined: April 6th, 2007, 1:39 pm

Dark Matter Is Crap

July 10th, 2012, 8:00 pm

QuoteOriginally posted by: outrunit's always red but de Brolgie matter waves are different from photon wavesthis is a good use of photoshop in atomic physics, i must admit
 
User avatar
rmax
Posts: 6080
Joined: December 8th, 2005, 9:31 am

Dark Matter Is Crap

July 11th, 2012, 7:38 am

QuoteOriginally posted by: outrunit's always red but de Brolgie matter waves are different from photon wavesIndeed and colour is from photons reacting with your retina. If electrons reacted with the retina you have have something analogous to a CRT.
 
User avatar
Traden4Alpha
Posts: 23951
Joined: September 20th, 2002, 8:30 pm

Dark Matter Is Crap

July 11th, 2012, 11:05 am

QuoteOriginally posted by: outrunQuoteOriginally posted by: rmaxQuoteOriginally posted by: outrunit's always red but de Brolgie matter waves are different from photon wavesIndeed and colour is from photons reacting with your retina. If electrons reacted with the retina you have have something analogous to a CRT.Indeed! And the retina is the reason that there is "pink", which isn't part of the spectrum.Moreover, one might argue that individual photons don't have colour because the cone cells of the retina are inefficient detectors and the cells have no direct ability to estimate the energy of specific photons. Instead, the eye measures aggregate flux using several types of sensors which have broad wavelength-dependent responses to light. (The rod cells of the retina are extremely sensitive and can detect single photons but they don't sense colour.)P.S. The eye is a little bit like a CRT in that cosmic rays can be directly sensed as flashes of light.
ABOUT WILMOTT

PW by JB

Wilmott.com has been "Serving the Quantitative Finance Community" since 2001. Continued...


Twitter LinkedIn Instagram

JOBS BOARD

JOBS BOARD

Looking for a quant job, risk, algo trading,...? Browse jobs here...


GZIP: On