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Walmart, the world's largest retailer, embraces social, mobile, and the startup spirit to compete against Amazon. Will it be enough?

"The theory of motivated reasoning builds on a key insight of modern neuroscience (PDF): Reasoning is actually suffused with emotion (or what researchers often call "affect"). Not only are the two inseparable, but our positive or negative feelings about people, things, and ideas arise much more rapidly than our conscious thoughts, in a matter of milliseconds-fast enough to detect with an EEG device, but long before we're aware of it. That shouldn't be surprising: Evolution required us to react very quickly to stimuli in our environment. It's a "basic human survival skill," explains political scientist Arthur Lupia of the University of Michigan. We push threatening information away; we pull friendly information close. We apply fight-or-flight reflexes not only to predators, but to data itself. We apply fight-or-flight reflexes not only to predators, but to data itself. We're not driven only by emotions, of course-we also reason, deliberate. But reasoning comes later, works slower-and even then, it doesn't take place in an emotional vacuum. Rather, our quick-fire emotions can set us on a course of thinking that's highly biased, especially on topics we care a great deal about."

Surprisingly, a study of deception in e-mails versus phone calls found that people were more honest in e-mails because they can be documented, saved and aren't real-time communication scenarios, which is when most people drop white lies. Technology isn't the gateway to rampant deception; instead, Toma and Hancock both suspect that our distrust of communication technology is more likely rooted in our fear of it. "We've evolved as a species that talks face to face, and evolution is a slow process, and we're interacting in a new environment where our basic assumptions are undercut," Hancock said. So, in a way, it's natural to expect people to lie more online. "Every time a technology is new, it elicits great fears. Many people are fearful about what it's going to do," Toma said. "So I think fears about deception stem from this general fear of technology and certain features of technologies that make it easy to lie."

Chance favors the connected mind. That is what author Steven B. Johnson says to those looking for the next big idea. Johnson is the author of "Where Ideas Come From" a book that looks at the macro trends on how innovation evolves. Ideas are rarely created through a "eureka" moment. It may seem like Doc Brown fell off his toilet and invented the flux capacitor, but really the idea for time travel and how to do it were converging in his brain for quite some time before the blow to head. Instead of an "aha!" moment, Johnson believes that ideas are born of a "slow hunch" that are made possible through periods of technological innovation and evolution. If you are creating a startup, where do you get your ideas from?

ONE HAS LATELY heard much of the hashtag. That is, the Twitter symbol #, used to categorize a tweet. Charlie Sheen's first tweet, for example, was famously: "Winning ..! Choose your Vice... #winning #chooseyourvice." #Winning has gone on to live in irony across the Twitterverse, in mockery of the eternally less-than-winning Sheen. But even President Obama recently urged students to tweet their senators about raising the interest rates on federally subsidized student loans with the hashtag "#DontDoubleMyRate." The new thing, however, is using the word "hashtag" in conversation. Especially if you are under a certain age, you may be catching people saying things like, "I ran into that guy I met-hashtag happy!" or, in response to someone complaining, "My flashlight app isn't working," perhaps you have heard the retort, "Hashtag First World problems!" A college student not long ago reported a favorite witticism to be appending observations with: "Hashtag did that just happen?