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James Long
Works at Crop Quant, Economist, and magnanimous cocktail party host.
Attended University of Kentucky
Lives in Southampton, Bermuda
797 followers|238,802 views
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James Long

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Let's pretend that matters...
 
Data quality may be swamped by other factors.
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Lloyds of London interviews the Easter Bunny. What stresses that bunny? "Trying to formulate an enterprise risk management programme that addresses both tangible and intangible risks but keeps the overall cost of risk at a sensible level."

Naturally!

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A discussion of data design patterns. Obviously AWS centric, but the design patterns can be thought of more generally. 
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But I like to anthropomorphize space objects...
 
Guardian of the Galaxy

Whenever I talk about the planets of the solar system, someone usually asks “what about Pluto?”  Many people have an emotional attachment to the planet, and feel somewhat offended that the mean astronomers have declared the tiny world to be not a planet.  So what about Pluto?  Well, it turns out we now know a great deal more about the planet than we did when you were little, and we’ll soon know even more.

When Pluto was first discovered in 1930, it was seen only as a faint point of light that moved relative to background stars.  It was only due to photographic observations that it was discovered at all.  Because of its distance it was difficult to determine the characteristics of Pluto.  We had no way to determine its mass, and estimating its size could only be done by guessing its albedo (how much light it reflects).  If it was a bright world it could be rather small, but if it was a dark world it would be rather big.

Then in 1977 a magnified photographic image of pluto showed a slight bulge.  Analysis of other images showed the bulge appeared with a period of about 6 days.  Pluto’s moon Charon had been discovered.  With the discovery of a moon it was then possible to determine the mass of Pluto.  It was found that Pluto’s mass was quite small, less than a fifth of our own Moon.  Later we determined its diameter is only about 70% that of the Moon.

That alone is enough to question the idea that Pluto should be considered a planet, but then we began to find more objects with similar distances and orbits as Pluto.  They form the Kuiper belt, which is an icy version of the asteroid belt beyond the orbit of Neptune.  Pluto is the largest Kuiper belt object (KBO), but we now know of more than a thousand KBOs larger than 100 km.  Pluto is very clearly part of a family of objects.  Which is one of the reasons it was demoted from being a planet.

The planet Pluto everyone loved was a dim speck of light.  The last planet at the edge of our solar system.  The dwarf planet Pluto of today is the largest member of an icy belt that marks the beginning of the outer solar system.  It is also the first such object we will explore.  In 2015 the New Horizons spacecraft will make a flyby of Pluto, giving us the first detailed images of a KBO.

So don’t mourn Pluto the dim dot of a planet.  Celebrate Pluto, the king of the Kuiper belt, and guardian of the great beyond.

Image: NASA/Hubble
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Drones are sailing now. Awesome! 
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Sweet!
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Have him in circles
797 people

James Long

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When I was 18 I was on the bubble choosing between a career as a lumberjack or something in quantitative economics. Whew, I dodged a bullet on that one! 
An annual ranking of best and worst jobs finds that mathematicians have it made while lumberjacks could use some help.
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So IEX is the exchange that was created to be fair to investors and not favor high frequency traders (HFT) as chronicled in Michael Lewis' Flash Boys. As is typical when techies interact with finance folks, some of those guys want to reinvent Excel.

Prepare the windmills, here come the ingenious gentlemen of La Mancha! 
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As a college basketball fan generally, and a University of Kentucky fan and alumni specifically, Saturday's UK victory over Wisconsin was everything I love about college basketball. While this tournament run is loads of fun for fans like me, it's likely a life changing event for UK player Aaron Harrison, who hit clutch shots for UK in three games in a row. The quants explain why:
Last night's last second, game-winning shot was what former basketball executive Tom Penn calls a typical "iconic moment" in an NCAA championship tournament reliably filled with such moments. It's the kind of action and unpredictability that has made the ostensibly amateur competition held each spring by the best college basketball teams more lucrative than any US sports event other...
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I "read" a lot of audio books when I run. And I just found a situation where buying the Kindle version AND the Audible.com version is cheaper than buying the Audible.com version alone. Looks like a no-brainer to me! In addition to reading in bed, I like having the Kindle version because I can search it. 
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Yep, I've read it and came to about the same rating you did. I was a little bit underwhelmed, but I imagine I'd feel that way about most quantitative topics written for a popular audience. 
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People
Have him in circles
797 people
Work
Occupation
Risk Economist & Itinerant Data Tinkerer.
Skills
I make models that are wrong but useful. Sometimes.
Employment
  • Crop Quant, Economist, and magnanimous cocktail party host.
    present
  • RenaissanceRe
  • Genworth Financial
  • KPMG
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Southampton, Bermuda
Previously
Clinton, KY - Richmond, VA - Lexington, KY - Chicago, IL
Links
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Introduction
Technologically inclined husband/father/geek. Misplaced Kentuckian in the land of pink sand. 
Bragging rights
I can't believe that I still have all 10 fingers!
Education
  • University of Kentucky
Basic Information
Gender
Male
Other names
JD Long
No longer in business. Closed in late 2013.
Public - a month ago
reviewed a month ago
3 reviews
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