Tuesday, August 31, 2010

When Quality Doesn't Matter

Paul Graham, a successful programmer who now funds start-up tech firms, writes about his experience with Yahoo! in the late 1990's. He had a start-up with a search algorithm that ranked search results by user behavior, how many clicks actually created purchases as opposed to mere clicks. It was like the algorithm Google uses to sort ads today, but this was in back in 1998. It seems like a rather obvious, straightforward improvement than just treating all clicks the same.

He notes an impression from a meeting where he pitched his product to Jerry Yang:
Jerry didn't seem to care. I was confused. I was showing him technology that extracted the maximum value from search traffic, and he didn't care? I couldn't tell whether I was explaining it badly, or he was just very poker faced.

I didn't realize the answer till later, after I went to work at Yahoo. It was neither of my guesses. The reason Yahoo didn't care about a technique that extracted the full value of traffic was that advertisers were already overpaying for it. If they merely extracted the actual value, they'd have made less.

When an industry is rife with business where quality does not matter, it becomes ripe for mimics who come in and sow the seeds of a crash and possible recession. There are many stories about real-estate brokers setting up shop in the early aughts, not caring about whether homebuyers would actually pay their mortgage because it did not matter. This was a signal that rot was rampant. Basically, if quality doesn't matter, and there's free entry, there's a bubble.

When people have positions that don't do what they say they do, and make a lot of money, there are myriad bad effects. Once when I was a risk manager, I remember showing a swaps book trader a more efficient way for him to hedge his portfolio. As I had to calculate his value-at-risk I had all the data to demonstrate conclusively my superior algorithm. He found this annoying. As a market maker, his Sharpe was already well above 10, so decreasing his value-at-risk by 20% did not really matter. Like Graham's encounter, I discovered it was all marketing.

The problem with this situation is that when you really understand the game, you have to never talk about it, which is easiest to do if you really don't understand it. So, the best brokers or brokers-who-call-themselves-traders are blithely ignorant, because they don't generate 'tells' that make everyone engaging in the game uncomfortable. When they talk about trade ideas that are totally unfounded, they can't be convincing if aware of its lack of statistical evidence, or how their qualifications make everything said meaningless (this could lead to a retracement). Once you swallow the red pill, you can't go back to enjoying the Matrix.

Similarly in the corporate borg, especially in places like the new Office of Minority and Women Inclusion that is now mandated to be part of each of our 30(!) financial regulatory bodies. As true discrimination is about as rare as a Klan rally, this is all just a sop to the Indian-like ethnic group spoils system the US is becoming (are there really any bankers who hate minorities enough to forgo extra profits?). So, the Chief Diversity officer's real role is not to rid financial discrimination, but rather to spout cliches about diversity, and put a pretext on the patronage daisy-chain that led to the 2008 housing crisis. However, if you really understood this, you would go crazy, so earnest dolts plague the aristocracy because the dupes actually believe their job is about what it says it's about.

Graham notes that Yahoo! was doomed by their dominant marketing, as opposed to programmer culture. I also think that when you get paid for something other than what you say you do, it doesn't give the same satisfaction. People who are overpaid may be rich, and such richness does buy you some friends, and I'm sure many think hey, I could live with that, no reason to be a prig about principle. I think that's a bit like thinking that if you had an infinite supply of sex, beer, or ice cream that would be awesome: only for a little while. Arthur Brook's perceived earned success I think highlights the importance of honest exchanges.

The Advisor Weblog

The Advisor Weblog


Best pair to trade now: EUR/USD

Posted: 31 Aug 2010 04:59 AM PDT

Majors’ sentiment for today

Posted: 31 Aug 2010 04:36 AM PDT

Here is the majors’ sentiment for today:

Eur/Usd: Bearish

Gbp/Usd: Bearish

Usd/Chf: Bearish

Usd/Jpy: Bearish

Eur/Gbp: Bullish

Eur/Jpy: Bearish

Gbp/Jpy: Bearish


Starting the day

Posted: 31 Aug 2010 04:35 AM PDT

Hi everyone and welcome back! Risk aversion environment starting past American session, extended over the past hours, and despite some shy corrective movements, both dollar and yen are pointing for an upside continuation against major rivals. Despite European stocks market pare early loses, mood remains negative as US futures are pretty negative rigth now, and that should weight on riskier assets such as Euro, Pound and Aud. Despite Japanese jawboning has multiplied, the yen remains strong approaching to 84.00 area against greenback. With S&P nearing 1035 support, if the index lose that level, USD/JPY could see a new ride of sell off.

Market is ignoring most of the schedule fundamental data, and moving more in bonds, and talks from authorities all across the world. Anyway, here is the link for today's calendar:

http://www.fxstreet.com/fundamental/economic-calendar/

Have a great day!


Science over Politics

The media tend to present scientists as super-rational beings, who stand outside the cognitive biases they note in others. For example, the paragon of rationality Carl Sagan famously wrote:
In science it often happens that scientists say, "You know that's a really good argument; my position is mistaken," and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.

I think this is profoundly misleading, because I can't remember any occasion where some scientist, on the spot, changed his mind about something important. They might concede a minor plank, but never the big idea. Inconsistent data points are seen as fatal or noise depending on what side you are on. Almost all interesting economic phenomena do not have definitive proof, so basically most of what we argue about comes down to common sense, just as in political or moral debates. After all, we only have a handful of recessions, and the effects of deficits (say) on unemployment (say) depend on whether the economy was at full employment, and whether the spending was an automatic stabilizer or exogenous increase, etc. Basically, we are left with about 2 datapoints to extrapolate from, and these also had their own idiosyncracies (especially if one is old enough to remember them personally).

The objective standard errors on important policy disagreements basically allows one to have any belief they want on fiscal policy. That doesn't mean everyone is equally right/wrong, just that it's essential to have good prejudices, opinions on things that can't be proven from axioms. This is why the academics aren't much help, because IQ and education just allows one to distinguish what is true, false, or indeterminate, and not very good at establishing probabilities. That is, a good statistician like Joshua Angrist will have a chapter on nonlinear relationships, and how important they are, and then argue that a 2% wage increase from when kids started school has implications for spending more on college; or Paul Samuelson will continually beat the drum for more deficit spending, and when someone mentions he is encouraging a debasement of the currency he will mention that he acknowledged that governments could spend too much, so he has done no such thing.

Priorities, not truths, underlie common sense.

The main advantage of scientific as opposed to political debates is that you don't have to be democratic, the mob does not rule.

Monday, August 30, 2010

The Advisor Weblog

The Advisor Weblog


Hourly perspective for US session

Posted: 30 Aug 2010 06:36 AM PDT

Starting the day

Posted: 30 Aug 2010 03:51 AM PDT

Hi everyone, and welcome back! the optimism that market shown with Asian opening, disappeared with BOJ poor announcements after the emergency meeting: they expanded expanding a low interest loan program to JPY30 Trillion from the initial JPY20 Trillion, as expected, leaving rates unchanged,; news hardly shock markets and yen resumed its bullish trend across the board: USD/JPY is testing 84.70 support area, with some braves expecting intervention around 84.00. In my opinion, far still from being a good bet. EUR/JPY quotes around 107.60, having lost the 108.00 level, while GBP/JPY approaches to 131.00 area.

Riskier currencies, such as Euro, Pound, and Aussie lost momentum, and are under pressure, aiming lower in this thin volume European session (London is closed on holidays). Stocks markets are slightly losing ground, favoring some dollar gains right now, still lack of definitions persist.  EUR/USD seems heading towards the 1.2660 area, while GBP/USD could test 1.5480/5500 zone.

We have a quite busy week from the fundamental side, so here is the link for todays’ calendar:

http://www.fxstreet.com/fundamental/economic-calendar/

Have a great day!


Unemployment Insurance

The idea that 'if you subsidize something you get more of it' seems as good a law in economics as you can find. Robert Barro argues today in the WSJ that since we moved unemployment insurance from 26 weeks of 'temporary' relief, to now 99 weeks, we have exacerbated unemployment problem, and now are approaching the European base rate. Isn't a more 'European style' economy what Obama wanted? Alas, when we create an American Europe, we don't get to choose what parts transfer.

Barro notes that increasing unemployment insurance lowers the probability a job seeker will accept a new job, and the economy is always creating and destroying a lot of jobs:
For example, the Bureau of Labor Statistics reports that, near the worst of the recession in March 2009, 3.9 million people were hired and 4.7 million were separated from jobs. This net loss of 800,000 jobs in one month indicates a very weak economy—but nevertheless one in which 3.9 million people were hired. A program that reduced incentives for people to search for and accept jobs could surely matter a lot here.

But, for the other side, the issue is rather simple. If we did not give people unemployment insurance, they would die. Here's American Prospect columnist Tim Fernholz explaining his utter disdain for Jim Bunning, the congressman who tried to block increasing unemployment insurance without funding it first.

Sunday, August 29, 2010

The Advisor Weblog

The Advisor Weblog


Starting the week

Posted: 29 Aug 2010 04:07 PM PDT

Hi everyone! market opened with a slightly positive tone, and greenback weak, while waiting for the upcoming of BOJ emergency meeting. Indeed, the start of the week seems quite more interesting that last ones so far, despite tomorrow’s holiday in London could turn markets thinner in Europe.

Here is the Live Coverage, just held, in case you missed it:

http://www.fxstreet.com/live/sessions/session.aspx?id=3a2b848b-38e0-42bc-9c8a-b0ad18d1ee3f


Friday, August 27, 2010

The Advisor Weblog

The Advisor Weblog


Hourly perspective for US session

Posted: 27 Aug 2010 06:32 AM PDT

EUR/USD: still in range

Posted: 27 Aug 2010 05:01 AM PDT

Starting the day

Posted: 27 Aug 2010 05:00 AM PDT

Hi everyone and welcome back! Market is quiet today, mostly in the same ranges as we seen past days, probably waiting for US GDP to be release in the next 30 minutes. I will be covering it Live! from FXstreet.com home page, so I hope you can all join me there.

Here is the link for today’s calendar:

http://www.fxstreet.com/fundamental/economic-calendar/

Have a great day!


A Funny Endogeneity Problem

One big question is whether variables like the deficit or Fed Funds rate causes GDP, or GDP causes the deficit, or both are caused by something else. Sometimes, these relationships change in various situations, as for example usually your temperature merely reflects an illness, but extreme exposure to cool water can lead to a low body temperature that directly causes death. It's a big problem in economics, where sadly we often don't have enough data.

However, common sense is very helpful in these environments. Over at Bloggingheads, this woman argues that obese, poor Americans are really hungry--a novel hunger problem--which is caused by their poverty.
"One of the biggest risk factors for somebody being both hungry and obese is living in poverty"

Thursday, August 26, 2010

Who's Weird?

Someone told me these two laws, which I find comforting:

1) You aren't as weird as you think
2) Other people are weirder than you think

The Advisor Weblog

The Advisor Weblog


Hourly perspective for US session

Posted: 26 Aug 2010 06:25 AM PDT

Best pair to trade now: EUR/USD

Posted: 26 Aug 2010 03:46 AM PDT

Majors’ sentiment for today

Posted: 26 Aug 2010 03:40 AM PDT

Here is the majors’ sentiment for today:

Eur/Usd: Slightly Bullish

Gbp/Usd: Bullish

Usd/Chf: Bearish

Usd/Jpy: Bearish

Eur/Gbp: Neutral

Eur/Jpy: Slightly Bearish

Gbp/Jpy: Slightly Bearish


Starting the day

Posted: 26 Aug 2010 03:18 AM PDT

Hi everyone and welcome to this blog! European morning is seeing some dollar weakness across the board, with stocks slightly positive easing the risk aversion environment we had first days’ of the week. Besides as we comment yesterday US data is quite scary lately, and greenback will have difficulties to find support; uneventful news this morning for Euro and Pound, both currencies are close to interesting resistance areas against greenback, 1.2735 for Eur/Usd, 1.5560 for Gbp/Usd; technical confirmations, or at least a strong acceleration above those areas should signal further bullish strength today for both crosses.

Usd/Jpy remains capped under 84.70/80 area, and for what I can see, we remain bearish in the cross; we need to regain at least 86.40 to talk about recovery, and seems too far away right now. Intervention seems even more far away. Swissy remains for me, the strongest currency across the board.

Anyway, we have weekly unemployment claims today in the US, with no much more significant news till tomorrow; here is the link for today’s calendar:

http://www.fxstreet.com/fundamental/economic-calendar/

Have a great day!