How To Model A Smoking Gun


Conspiracy theorists just love to get hold of a piece of new information and claim that it is the 'smoking gun'  that 'conclusively proves' their pet theory.  The psychology behind this mode of argument is so subtle that a 'smoking gun' proponent may not just fool many ordinary members of the public.  They may fool themselves also.


The Importance Of Context.

According to a study of how people evaluate and act on online health advice, information written by a doctor is considered more credible when it appears on a Web site than on a blog or a homepage. The findings, published in the Journal Communication Research, highlight the relative importance of different online sources to people who seek health information on the Internet.

"Most people look for health information online by keying disease symptoms into various search engines," said S. Shyam Sundar, distinguished professor of communications, Penn State. "But the results of that search could range from experts at the Mayo Clinic to somebody's personal blog."

In an article published this week in Science, Monash University biochemists say they have discovered the process by which bacteria developed into more complex cells and that this crucial evolutionary step happened much earlier than previously thought.

The team found that the cellular machinery needed to create mitochondria was constructed from parts pre-existing in the bacterium. These parts did other jobs for the bacterium, and were cobbled together by evolution to do something new and more exciting.

Researchers have developed a novel method for reconstructing past ocean chemistry using calcium carbonate veins that precipitate from seawater-derived fluids in rocks beneath the seafloor. The new method will help scientists analyze past changes in climate, plate tectonics and evolution of life in the oceans. The research is detailed in a paper published online in Science.

"These processes affect ocean chemistry and have shaped our planet over millions of years," said Dr Rosalind Coggon, a professor Imperial College London.

Johns Hopkins scientists have discovered that common but hard-to-see sugar switches play an important role in cell division. Because these previously unrecognized sugar switches are so abundant and potential targets of manipulation by drugs, the discovery of their role has implications for new treatments for a number of diseases, including cancer, the scientists say.

Conventional wisdom says that children who are especially sensitive to stress are more vulnerable to adversity and have more behavior and health problems than their peers. But a new study in the journal Child Development suggests that highly sensitive children are also more likely to do well when they're raised in supportive environments.

The researchers looked at 338 kindergarteners, as well as their teachers and families, to determine how family adversity and biological reactivity contribute to healthy development.

Using transcriptional profiling, researchers at Singapore's Nanyang Technological University have uncovered previously unknown gene expression patterns in malaria. The discovery could lead to the development of more potent drugs or a vaccine for malaria, which is transmitted to humans by infected mosquitoes and kills up to three million people each year.

Transcriptional profiling is the measurement of the activity of thousands of genes at once, to create a global picture of cellular function. These profiles can, for example, distinguish between cells that are actively dividing, or show how the cells react to a particular treatment.