The average lifespan of a friendship? Ten years…

ImagesHere’s why…

’Some friendships last a lifetime, but most have a lifespan. In the U.S., best friends tend to last for 10 years on average, says Nicholas Christakis.
In friendships, one person may begin to defect or “free ride”, which causes the other person to choose between cooperation or defection. People tend to choose the latter so they won’t be taken advantage of.
A certain amount of social fluidity, taking a breather from a friendship, can actually make a friendship last longer.…’

Via Why do good friends drift apart? – Big Think

Is it the end of ‘statistical significance’?

UnknownThe battle to make science more uncertain:

’The scientific world is abuzz following recommendations by two of the most prestigious scholarly journals – The American Statistician and Nature – that the term “statistical significance” be retired.

In their introduction to the special issue of The American Statistician on the topic, the journal’s editors urge “moving to a world beyond ‘p<0.05,’” the famous 5 percent threshold for determining whether a study’s result is statistically significant. If a study passes this test, it means that the probability of a result being due to chance alone is less than 5 percent. This has often been understood to mean that the study is worth paying attention to.

The journal’s basic message – but not necessarily the consensus of the 43 articles in this issue, one of which I contributed – was that scientists first and foremost should “embrace uncertainty” and “be thoughtful, open and modest.”…’

Via Neuroscience News

The Barr-Shaped Cloud Over the Justice Department

90Matthew Miller, former Director of the Office of Public Affairs at the Justice Department, writes:

’The attorney general’s actions raise suspicions about whether he is acting primarily to benefit the president because they don’t make sense when viewed through any other lens. Barr is neither inexperienced nor naive, yet when deciding among the several options available to him when he received Mueller’s report, he chose the one course of action that would raise questions about his own integrity and plunge the Justice Department into political controversy.…’

Via POLITICO Magazine