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There are literally thousands of ways to design a study. When a news story suggests, "A new scientific study has found…" or a celebrity doctor begins a sentence with, "Studies show…", you need to ask, "What kind of studies?" Because "studies" are not equally reliable, they all have different limitations, and they should not be acted on in the same manner — or even acted on at all. Here's a quick guide to understanding study design that will help you navigate the often bewildering world of health research.
The one chart you need to understand any health study
Today’s study is just the latest word and must be interpreted in context of others.
A 2008 review by the Food and Agriculture Organization concluded that “there is no probable or convincing evidence” that a high level of fat in the diet causes heart disease.18 A 2012 Cochrane review of 24 comparisons with 65 508 participants found no benefit from total fat reduction and no effect on cardiovascular or total mortality but a small reduction (relative risk 0.86 (95% confidence interval 0.77 to 0.96)) in cardiovascular events in men (not women).
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DIY Exoplanet Detector – IEEE Spectrum
You don’t need a high-powered telescope to spot the signature of an alien world
I'm closing your website and never coming back. Â Also, if I meet you in real life I might consider pushing you down the stairs.
These are not the classic "pop up in a new window" pop ups, they're the "pop up entirely within the webpage" pop ups.
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At the photo shoot, beautiful models with perfect everything glide by in stilettos. Space heaters are put out to warm the nearly nude women, while makeup artists in puffy jackets touch up their faces. The photographer, a man, has some guidelines for what works in pictures: a certain distance between the camera and the model, a specific blurriness, particular positions that sell well. Hand on hip, a popular pose among Instagrammers trying to make their arms look skinny, doesn't resonate nearly as well as a hand on the head, for example. (That slight change can double sales, according to internal research.)
This Lingerie Company A/B Tests The World’s Hottest Women To See Who Makes You Click “Buy”
All lingerie companies hire hot women to flaunt their wares. Adore Me goes many steps furtherand the data is full of surprises.


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Dustin Wyatt’s answer to What would our world be like if everybody behaved completely rationally? – Quora
It depends on what you mean by rationality.
If you mean some caricature of rationality like Spock, then the world would be a pretty lifeless place. People …
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