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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…
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Phil's Favorites

Greecification of Spanish Politics and the Lies of Spain's Ministers

Courtesy of Mish.

There's an excellent post on Keep Talking Greece this evening on the simmering feud between Greek prime minister Alexis Tsipras and Spanish prime minister Minister Mariano Rajoy.

Tsipras made a claim that Rajoy's plan is to "wear down, topple or bring our government to unconditional surrender before our work begins to bear fruit and before the Greek example affects other countries… And mainly before the elections in Spain. ... for obvious political reasons".

Spanish foreign minister García Margallo, returned fire with a statement (a lie actually), that “Had Spain not given  €32.744 billion to Greece, it could have increased the unemployment benefits by 50 percent or increase pensions by 38 percent.”

Theheart of the bickering is the rise of the Spanish political party Podemos to the top of the Spanish...



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Chart School

Light Vehicle Sales Per Capita: A Better Look at the Long-Term Trend

Courtesy of Doug Short.

Note from dshort: Following up on yesterday's preliminary report on U.S. Light Vehicle sales, I've update the charts below.

For the past few years I've been following a couple of transportation metrics: Vehicle Miles Traveled and Gasoline Volume Sales. For both series I focus on the population adjusted data. Let's now do something similar with the Light Vehicle Sales report from the Bureau of Economic Analysis. This data series stretches back to January 1976. Since that first data point, the Civilian Noninstitutional Population Age 16 and Over (i.e., driving age not in the military or an inmate) has risen 61.7%.

Here is a chart, court...



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Zero Hedge

India Central Bank Cuts Interest Rate "Pre-Emptively" For Second Time In 2 Months

Courtesy of ZeroHedge. View original post here.

Submitted by Tyler Durden.

In a surprise move, the RBI just cut its main interest rates for the second time in two months, taking it from 6.75% to 6.50%, in what the central bank calls a “pre-emptive” policy move, but what is in reality merely a confirmation that so far in 2015 at least 20 central banks have lowered their interest rate. 

From the statement: 

The RBI notes that the rupee has remained strong relative to peer countries. While an excessively strong rupee is undesirable, it too creates disinflationary impulses… 


...softer readings on inflation are expected to come in through the first half of 2015-16 before firming up to below 6 per cent in the second half. The fiscal consol...



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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...

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Sabrient

Sector Detector: Stocks break out again but may be running on fumes

Courtesy of Sabrient Systems and Gradient Analytics

Despite low trading volume, a strong dollar, mixed economic and earnings reports, paralyzing weather conditions throughout much of the U.S., and ominous global news events, stocks continue to march ever higher. The world remains on edge about potential Black Swan events from the likes of Russia, Greece, or ISIS (or lone wolf extremists). Moreover, the economic recovery of the U.S. may be feeling the pull of the proverbial ball-and-chain from the rest of the world’s economies. Nevertheless, awash in investable cash, global investors see few choices better than U.S. equities.

In this weekly update, I give my view of the current market environment, offer a technical analysis of the S&P 500 chart, review our weekly fundamentals-based SectorCast rankings of the ten U.S. business sectors, and then ...



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OpTrader

Swing trading portfolio - week of March 2nd, 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 ...



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Market Shadows

Kimble Charts: Coal

Kimble Charts: Coal

By Ilene 

Chris Kimble's chart for KOL shows a recently beaten down ETF struggling to pull itself up from the ashes. As the chart shows, KOL has recently drifted down to levels not seen since the financial crisis of 2008-9.

Bouncing or recovering with energy in general, coal prices appear to have stabilized in the short-term. Reflecting coal prices, KOL has traded between $13.45 and $19.75 during the past year. Bouncing from lows, KOL traded around 2% higher yesterday from $14.26 to $14.48 on high volume. It traded another 3.6% higher in after hours to $15, possibly related to ...



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Digital Currencies

MyCoin Exchange Disappears with Up To $387 Million, Reports Claim

Follow up from yesterday's Just the latest Bitcoin scam.

Hong Kong's MyCoin Disappears With Up To $387 Million, Reports Claim By  

Reports are emerging from Hong Kong that local bitcoin exchange MyCoin has shut its doors, taking with it possibly as much as HK$3bn ($386.9m) in investor funds.

If true, the supposed losses are a staggering amount, although this estimate is based on the company's own earlier claims that it served 3,000 clients who had invested HK$1m ($129,000) each.

...



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Pharmboy

2015 - Biotech Fever

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

PSW Members - well, what a year for biotechs!   The Biotech Index (IBB) is up a whopping 40%, beating the S&P hands down!  The healthcare sector has had a number of high flying IPOs, and beat the Tech Sector in total nubmer of IPOs in the past 12 months.  What could go wrong?

Phil has given his Secret Santa Inflation Hedges for 2015, and since I have been trying to keep my head above water between work, PSW, and baseball with my boys...it is time that something is put together for PSW on biotechs in 2015.

Cancer and fibrosis remain two of the hottest areas for VC backed biotechs to invest their monies.  A number of companies have gone IPO which have drugs/technologies that fight cancer, includin...



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Stock World Weekly

Stock World Weekly

Newsletter writers are available to chat with Members regarding topics presented in SWW, comments are found below each post.

Here's this week's Stock World Weekly.

Click here and sign in with your user name and password. 

 

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Option Review

SPX Call Spread Eyes Fresh Record Highs By Year End

Stocks got off to a rocky start on the first trading day in December, with the S&P 500 Index slipping just below 2050 on Monday. Based on one large bullish SPX options trade executed on Wednesday, however, such price action is not likely to break the trend of strong gains observed in the benchmark index since mid-October. It looks like one options market participant purchased 25,000 of the 31Dec’14 2105/2115 call spreads at a net premium of $2.70 each. The trade cost $6.75mm to put on, and represents the maximum potential loss on the position should the 2105 calls expire worthless at the end of December. The call spread could reap profits of as much as $7.30 per spread, or $18.25mm, in the event that the SPX ends the year above 2115. The index would need to rally 2.0% over the current level...



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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!




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