Unraveling The Dream Within The Dream! Very few would need a hint to guess that the picture on the left is taken from the movie, Inception. The behavior of the spinning top helps in differentiating reality from illusion. It's a mesmerizing concept attempting to visually articulate the subconscious mind. Inception is a movie based on lucid dreaming. The science fiction shows how something that cannot be achieved in real world, can be achieved by transforming the world to a virtual reality and then after the goal is achieved, transform the world back to reality.

This is the weekend roundup of The WorldPost, of which Nathan Gardels is the editor in chief. In The WorldPost this week, we examine and evaluate two key developments of the digital age: the emergent geopolitics of artificial intelligence and Facebook's recent move toward "reputational scores" as a means to signal trustworthy information to users. For Lee, who is based in Beijing, the world of AI has become a "duopoly" in which China and America competitively drive each other's innovations forward while dominating the rest of the world. Lee argues that China's "scrappy" days of stealing intellectual property to get ahead are behind it. Rather, its rapid advance in AI today is due to the superior business model of its tech entrepreneurs.

Jefferson Graham visits an Amazon Go store in Seattle, where an app gains you entrance to the store, and there are no lines or cashiers to check you out./ Murphy Brown returned this week and she got herself a lesson on how to tweet. Yup, that's how out of it she's been. In case you missed it, the hit show that originally debuted in 1988 returned to CBS Thursday in a revival. Thirty years later, for Talking Tech readers, this seemed like a great opportunity for us to look back at three decades of how our lives have changed with technology.

The first novel by YouTube star Hank Green, An Absolutely Remarkable Thing, is about a young woman named April who becomes an internet celebrity after posting video of a mysterious alien robot. She quickly discovers that being famous has a lot of downsides--something Green and his friends have learned the hard way. "I started to have notoriety in my late 20s or early 30s--like the first time someone recognized me in public was probably when I was 29 years old," Green says in Episode 328 of the Geek's Guide to the Galaxy podcast. "Whereas for a lot of my friends, this happened in their teens or early 20s, and it was sort of their first job, being a famous person, without any of the infrastructure of normal famous-person life, because this was all so new, and that was difficult." April soon draws the ire of Peter Petrawicki, a professional troll who accuses her of being in league with the alien invaders.

During a blockbuster press event last week, Amazon took the wraps off a redesigned Echo Show, Echo Plus, and Echo Spot, and nine other new other voice-activated accessories, peripherals, and smart speakers powered by Alexa. Also in tow: the Alexa Presentation Language, which lets developers build "multimodal" Alexa apps -- skills -- that combine voice, touch, text, images, graphics, audio, and video in a single interface. Developing the frameworks that underlie it was easier said than done, according to Amazon senior speech scientist Vishal Naik. In a blog post today, he explained how Alexa leverages multiple neural networks -- layered math functions that loosely mimic the human brain's physiology -- to resolve ambiguous requests. The work is also detailed in a paper ("Context Aware Conversational Understanding for Intelligent Agents with a Screen") that was presented earlier this year at the Association for the Advancement of Artificial Intelligence.

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James Cameron's 3-D film Avatar sought to revolutionize the movie-going experience when it was first released in 2009, creating an immersive world for viewers. But what if you also wanted to feel the heat and the wind, while flying on a banshee, direct from your cinema seat? While a small number of so-called "4-D" movies that add a physical element already exist, researchers from the University of Toronto are working on a way to apply the feature more broadly. "Usually the chair will shake, there can be splashing or some other kind of interaction while watching the film," says Yuhao Zhou, a fourth-year undergraduate in the Edward S. Rogers Sr. department of electrical & computer engineering, of the emerging entertainment. "Right now all these effects are created from the first phase of production. We'd like to automate this kind of process for movies that were not originally created for 4-D cinemas."

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In a recent interview with Yahoo, Call Me By Your Name director Luca Guadagnino revealed that his new horror film Suspiria is meant to be, "a sort of fierce showcase of the female artistic experience." But according to a recent lawsuit, he took too literal of an approach in this pursuit. On Thursday, the estate of Ana Mendieta claimed that the film copies images from the late artist's work. A cease and desist letter sent to Amazon Studios in July alleged that the film and trailer contained both a shot of a woman's hands bound with rope across a white table, resembling Mendieta's piece "Rape Scene," and a shot of a body silhouetted on a bed sheet, forming a similar image to Mendieta's "Untitled (Silueta Series, Mexico)." In response, these two images were removed from the film.

NOA doesn't want you to read the news. It wants to read it to you. The Irish company's full name is News Over Audio and it does exactly what that suggests: collects up the best of the world's news and turns it into nuggets of audio, allowing you to catch up on them while listening rather than having to read at a screen. The news you can get is already among the best in the world: it includes the Financial Times and Bloomberg, as well as The Independent. And it is continuing to grow, with other publishers that are among the world's biggest and most important, having announced in recent days that the Economist and the New York Times are arriving, too. The I.F.O. is fuelled by eight electric engines, which is able to push the flying object to an estimated top speed of about 120mph.