Tag Archives: data


Is Justified True Belief Knowledge?

Edmund Gettier is Professor Emeritus at the University of Massachusetts,
Amherst. This short piece, published in 1963, seemed to many decisively to
refute an otherwise attractive analysis of knowledge. It stimulated a renewed
effort, still ongoing, to clarify exactly what knowledge comprises.

Gettier problem

From Wikipedia, the free encyclopedia

The Gettier problem, in the field of epistemology, is a landmark philosophical problem with our understanding of knowledge. Attributed to American philosopher Edmund Gettier, Gettier-type counterexamples (called “Gettier-cases”) overturned the long-held justified true belief (or JTB) account of knowledge. On the JTB account, knowledge is equivalent to justified true belief, and if all three conditions (justification, truth, and belief) are met of a given claim, then we have knowledge of that proposition. In his three-page 1963 paper, titled Is Justified True Belief Knowledge?, Gettier showed, by means of two counterexamples, that there were cases where individuals had justified true belief of a claim, but still failed to know it. Thus, Gettier showed that the JTB account was inadequate—it could not account for all of knowledge. The JTB account was first credited to Plato, though Plato argued against this very account of knowledge in the Theaetetus (210a).

The term “Gettier problem”, or “Gettier case”, or even the verb Gettiered is sometimes used to describe any case in epistemology that purports to repudiate the JTB account.

Responses to Gettier’s paper have been numerous. Some rejected Gettier’s examples, while others sought to adjust the JTB account to blunt the force of counterexamples. Gettier problems have even found their way into experiments, where the intuitive responses of people of varying demographics to Gettier cases have been studied.

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open data

At the end of the month, world governments will convene at the UN COP21 conference in Paris for the next round of binding emission commitments aimed at restricting global warming to no more than two degrees by the end of the century.

When it comes to agreeing potentially tougher targets, both policymakers and members of the public will now be armed with the COP21 climate change calculator, developed by the Climate-KIC, the EU’s main climate innovation research centre, in collaboration with Imperial College, London and FT.com.

Using data on the emission reduction pledges made to date and scientific forecasts on future warming, it aims to inform the public and policymakers on the impact a variety of choices by individual countries would have on overall global warming.

flying objects

Uploaded on Sep 22, 2008

The AirTraffic team presents the global air traffic (simulation over 24 hours).

Uploaded on Feb 19, 2010

Courtesy NASA

FACET is a simulation tool for exploring advanced air traffic management concepts.
An efficient and effective air traffic management system is vital to the U.S. transportation infrastructure. Since 1978, when the airline industry was deregulated, the inflation adjusted gross domestic product (GDP) has increased by 62 percent. In this same time period, total output of scheduled passenger air transportation (as measured by Revenue Passenger Miles) has increased by 190 percent and total airfreight ton miles have increased by 289 percent. Since 1997, flight delays have skyrocketed – doubling in only four years. These trends are expected to continue. In 1998, airline delays in the U.S. cost industry and passengers $4.5 billion — the equivalent of a 7 percent tax on every dollar collected by all the domestic airlines combined.

Uploaded on Oct 26, 2010

Simulation of Space Debris orbiting Earth. Created by the Institute of Aerospace Systems of the Technische Universität Braunschweig and shown at the 3rd Braunschweig Lichtparcours from June 19th to September 30th, 2010. Also available as an interactive screen saver for windows and Linux athttp://www.days-in-space.de.
More information about our research at http://www.space-debris.de.
Color Key:
Red: Satellites (operational or defunct)
Yellow: Rocket bodies
Green: Mission Related Objects (bolts, lens caps, etc.)
Blue: Solid rocket motor slag
White: Fragments from explosion events

Data explorer

Logan Symposium: Google Public Data Explorer from Berkeley Graduate School of Journalism on FORA.tv

4th Annual Logan Symposium on Investigative Reporting

Read more at http://fora.tv/2010/04/18/Logan_Symposium_Google_Public_Data_Explorer#uXLe1TU6lWF4IJp2.99

Uploaded on Jun 2, 2010

Complete video at: http://fora.tv/2010/04/18/Logan_Sympo…

Using Google’s new Public Data Explorer tool, Ola Rosling demonstrates the effectiveness of visualizing datasets. Looking toward the next political election, Rosling hopes voters will use the tool to answer questions like: How was the money spent? Where are the biggest problems?


Ola Rosling of Google Public Data gives a presentation titled, “Google Public Data Explorer” at the Berkeley Graduate School of Journalism. This program was recorded on April 18, 2010.

Ola Rosling co-founded the Gapminder Foundation and led the development of Trendalyzer, a software that converts time series statistics into animated, interactive and comprehensible graphics. The aim of his work is to promote a fact-based world view through increased use and understanding of freely accessible public data.

In March 2007, Google acquired the Trendalyzer software, where Rosling and his team are now scaling up their tools and making them freely available for any individual or organization to use for analyzing and visualizing data.