Posts Tagged ‘observer bias’

Laplace’s Hammer: The End of Economics

Laplace’s Hammer: The End of Economics

Courtesy of Tim at The Psy-Fi Blog 

Clever Man, Stupid Idea

Simon-Pierre LaplaceSimon-Pierre Laplace was a Very Clever Man who did many Very Clever Things. Unfortunately, like many clever men, having got hold of a Brilliant Idea he was rather inclined to go off and use it on everything in sight, which led to a number of Very Odd Conclusions. In fact as far as science goes, he may well have been the original man with a hammer; taking aim at every problem as though it was a nail.

As is the way of these things economists got hold of Laplace’s ideas, converted them to their own and started developing delicate and intricate webs of theories and practices. Unfortunately, over the succeeding three hundred years they’ve failed to keep up with advances in physics and biology, rather leaving economists as the only believers in an approach that suggests we have no free will, a position from which they’re having to be dug out and defused, one unexploded theorist at a time.

Newton’s Error

When Isaac Newton published his theory of gravity he knew it contained a serious flaw; his equations didn’t exactly match what was observed. He reckoned, correctly, that the differences between his theory and the observations were down to the gravitational effect on the planets of other planets – so called perturbations, which he didn’t know how to mathematically model. He said:

“But to consider simultaneously all these causes of motion and to define these motions by exact laws admitting of easy calculation exceeds, if I am not mistaken, the force of any human mind.”

And, of course, he was mistaken. The force of Laplace’s mind successfully solved the problem. Having achieved this, though, Laplace went a stage further. Because he could exactly calculate the position of any planet he could compare this with the results of observations from astronomers. What he discovered changed human history.

Observer Bias

It turned out that observers made errors, but they made them in a particular way – their observations fell about the actual position of the planet in a very distinctive pattern. This pattern, of course, was the ultra-familiar Bell curve or normal distribution. Laplace realised that human error was statistically quantifiable and, therefore, could be effectively eliminated from the data. This…
continue reading


Tags: , , , , , , ,




 
 
 

Zero Hedge

For The Bookies The Referendum Outcome Is Clear: Paddy Power Pays Out For "Yes" Votes

Courtesy of ZeroHedge. View original post here.

Submitted by Tyler Durden.

The market may be scratching its head over the outcome of this Sunday's Greek referendum, soaring on the faintest trace of good news such as the report of Tsirpas' capitulation this morning then reluctantly selling off as the euphoria is rejected, but for the bookies the outcome is now clear: earlier today Ireland's Paddy Power announced it has "paid out five figures" in winnings to gamblers who bet that Greece will back a July 5 austerity referendum that may seal the nation’s future as part of the euro region.

Cited by Kathimerini, Pad...



more from Tyler

Phil's Favorites

Troika Documents Say Greece Needs Huge Debt Relief

Courtesy of The Automatic Earth.

NPC R.P. Andrews fire, 628 D Street N.W, Washington, DC 1912

Just when you think things can’t get any crazier, they always do. The Guardian reports on unpublished Troika documents that show Greece is only too right in asking for debt relief. That for the Syriza government to sign what the Troika wants to force them to sign would see Tsipras et al plunge their country into a financial hell hole.

What’s potentially even weirder is that all German MPs have received the documents, because a vote on them was supposed to take place, but none have said a thing about them. Good thing one at least was awake enough to send them to the press.

So they have these docs, and then yesterday Merkel says no more talks until after the referendum, and total silence fol...



more from Ilene

Market News

News You Can Use From Phil's Stock World

 

Financial Markets and  Economy

Ukraine Halts Russian Gas Purchases After Price Talks Fail (Zero Hedge)

It has been a bad day for deals and deadlines all around: first Greece is about to enter July without a bailout program and in default to the IMF with the ECB about to yank its ELA support or at least cut ELA haircuts; also the US failed to reach a nuclear deal with Iran in a can-kicking negotiation that has become so farcical there is no point in even covering it; and now moments ago a third June 30 "deal" failed to reach an acceptable conclusion when Russia and Ukraine were unable to reach an agreement on gas prices at talks in Vienna on Tuesday. As a result, Ukraine is suspending its purchase of Russian gas.

...



more from Paul

Chart School

No Update

Courtesy of Declan.

Stockcharts.com running very slow, so no update today. ...

more from Chart School

All About Trends

Mid-Day Update

Reminder: David is available to chat with Members, comments are found below each post.

Click here for the full report.




To learn more, sign up for David's free newsletter and receive the free report from All About Trends - "How To Outperform 90% Of Wall Street With Just $500 A Week." Tell David PSW sent you. - Ilene...

more from David

Kimble Charting Solutions

Junk bonds diverging, could send bearish message to stocks!

Courtesy of Chris Kimble.

CLICK ON CHART TO ENLARGE

This charts takes a 25-year look at the Pimco High Yield mutual fund. In 1999 & 2007 the fund was diverging against the S&P 500 and once it broke support the fund and broad markets turned weak together.

At this time PHDAX is now testing 4-year support and it has been diverging against S&P for almost a year!

Below looks at the two most popular junk bond ETF’s against the S&P 500

CLICK ON CHART TO ENLARGE

This chart reflects that JNK & HYG are diverging against th...



more from Kimble C.S.

OpTrader

Swing trading portfolio - week of June 29th., 2015

Reminder: OpTrader is available to chat with Members, comments are found below each post.

 

This post is for all our live virtual trade ideas and daily comments. Please click on "comments" below to follow our live discussion. All of our current  trades are listed in the spreadsheet below, with entry price (1/2 in and All in), and exit prices (1/3 out, 2/3 out, and All out).

We also indicate our stop, which is most of the time the "5 day moving average". All trades, unless indicated, are front-month ATM options. 

Please feel free to participate in the discussion and ask any questions you might have about this virtual portfolio, by clicking on the "comments" link right below.

To learn more about the swing trading virtual portfolio (strategy, performance, FAQ, etc.), please click here ...



more from OpTrader

Digital Currencies

BitGold Now Available in US! Why BitGold?

Courtesy of Mish.

BitGold USA

Effective today, BitGold Announces Platform Launch in the United States.

BitGold, a platform for savings and payments in gold, is pleased to announce the launch of the BitGold platform for residents of the US and US territories. As of today, US residents can sign up on the BitGold platform and buy, sell, or redeem gold using BitGold’s Aurum payment and settlement technology. US residents will also have access to the BitGold mobile app and a prepaid card when these features launch over the coming weeks. Send and receive gold payment features are not initially available in the US.

About BitGold

...



more from Bitcoin

Sabrient

Sector Detector: Bulls under the gun to muster troops, while bears lie in wait

Reminder: Sabrient is available to chat with Members, comments are found below each post.

Courtesy of Sabrient Systems and Gradient Analytics

Two weeks ago, bulls seemed ready to push stocks higher as long-standing support reliably kicked in. But with just one full week to go before the Independence Day holiday week arrives, we will see if bulls can muster some reinforcements and make another run at the May highs. Small caps and NASDAQ are already there, but it is questionable whether those segments can drag along the broader market. To be sure, there is plenty of potential fuel floating around in the form of a friendly Fed and abundant global liquidity seeking the safety and strength of US stocks and bonds. While the technical picture has glimmers of strength, summer bears lie in wait.

In this weekly ...



more from Sabrient

Pharmboy

Baxter's Spinoff

Reminder: Pharmboy and Ilene are available to chat with Members, comments are found below each post.

Baxter Int. (BAX) is splitting off its BioSciences division into a new company called Baxalta. Shares of Baxalta will be given as a tax-free dividend, in the ratio of one to one, to BAX holders on record on June 17, 2015. That means, if you want to receive the Baxalta dividend, you need to buy the stock this week (on or before June 12).

The Baxalta Spinoff

By Ilene with Trevor of Lowenthal Capital Partners and Paul Price

In its recent filing with the SEC, Baxter provides:

“This information statement is being ...



more from Pharmboy

Mapping The Market

An update on oil proxies

Courtesy of Jean-Luc Saillard

Back in December, I wrote a post on my blog where I compared the performances of various ETFs related to the oil industry. I was looking for the best possible proxy to match the moves of oil prices if you didn't want to play with futures. At the time, I concluded that for medium term trades, USO and the leveraged ETFs UCO and SCO were the most promising. Longer term, broader ETFs like OIH and XLE might make better investment if oil prices do recover to more profitable prices since ETF linked to futures like USO, UCO and SCO do suffer from decay. It also seemed that DIG and DUG could be promising if OIH could recover as it should with the price of oil, but that they don't make a good proxy for the price of oil itself. 

Since...



more from M.T.M.

Promotions

Watch the Phil Davis Special on Money Talk on BNN TV!

Kim Parlee interviews Phil on Money Talk. Be sure to watch the replays if you missed the show live on Wednesday night (it was recorded on Monday). As usual, Phil provides an excellent program packed with macro analysis, important lessons and trading ideas. ~ Ilene

 

The replay is now available on BNN's website. For the three part series, click on the links below. 

Part 1 is here (discussing the macro outlook for the markets) Part 2 is here. (discussing our main trading strategies) Part 3 is here. (reviewing our pick of th...

more from Promotions

Help One Of Our Own PSW Members

"Hello PSW Members –

This is a non-trading topic, but I wanted to post it during trading hours so as many eyes can see it as possible.  Feel free to contact me directly at jennifersurovy@yahoo.com with any questions.

Last fall there was some discussion on the PSW board regarding setting up a YouCaring donation page for a PSW member, Shadowfax. Since then, we have been looking into ways to help get him additional medical services and to pay down his medical debts.  After following those leads, we are ready to move ahead with the YouCaring site. (Link is posted below.)  Any help you can give will be greatly appreciated; not only to help aid in his medical bill debt, but to also show what a great community this group is.

http://www.youcaring.com/medical-fundraiser/help-get-shadowfax-out-from-the-darkness-of-medical-bills-/126743

Thank you for you time!




FeedTheBull - Top Stock market and Finance Sites



About Phil:

Philip R. Davis is a founder Phil's Stock World, a stock and options trading site that teaches the art of options trading to newcomers and devises advanced strategies for expert traders...

Learn more About Phil >>


As Seen On:




About Ilene:

Ilene is editor and affiliate program coordinator for PSW. She manages the site market shadows, archives, more. Contact Ilene to learn about our affiliate and content sharing programs.

Market Shadows >>