Students taking Georgia Tech's online Knowledge-Based Artificial Intelligence course received some surprising news. Jill Watson one of the nine teaching assistants(TAs) that had helped them finish the challenging course for the past five months was not a ‘‘she'' but an “it”—an intelligent robot!

    Watson is the brainchild of Ashok Goel, who teaches the popular online course. The Professor-of Computer and Cognitive Science in the School of Interactive Computing came up with the idea as a way to deal with a number of questions posed by students in the online forums(论坛). According to Goel, every time the course is offered, the 300 or so students that enroll post over 10,000 questions which are often repetitive. This led Goel to wonder if a smart robot would handle the questions which require standard responses.

    Having worked' with IBM's Watson technology platform in the, the professor knew it would be ideal for his artificial TA: Jill Watson. The artificial intelligence system that uses natural language processing and machine learning to analyze large amounts of data has even been cleverer than human competitors on the television show. It would therefore easily be able to handle routine questions that required little “thinking”.

    The professor and his team of graduate students began by populating Jill's memory with 40,000 questions and answers from past terms. Then came the testing stage. At first, Jill was not very good and often gave strange answers. It often got stuck on certain keywords. By the end of the semester, Jill had attained enough knowledge and skills to participate in forums without any management from Goel, or the other assistants.

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    Shopping for and choosing clothes is challenging enough. But imagine if you were unable to use your arms to do anything, or used a wheelchair.

    The conditions are reality for four people who became the "customers" of 15 students at Parsons School of Design at the New School this year. The students spent their spring term creating clothing to fit their customers' unique requirements as part of a class run by Open Style Lab, a nonprofit organization whose aim is to design functional and fashionable clothing for people with disabilities.

    "Disability overlaps (关联、一致) with aging and universal design," said Grace Jun, the director of the program. "We need to see it as part of our life cycle. It's something that we need to not only see from a human rights standpoint but also for its economic value."

    "I'm always looking at me being the problem and the clothing as being OK," said Kieran Kern, who gets around in a wheelchair. When Ms. Kern approached Open Style Lab, she was looking for a coat that would be easy to put on with the limitations of a weaker body. Her team came up with a design with a circular rod (杆) that runs through the collar and allows Ms. Kern to swing the coat across her back with one hand.

    "The idea of having a coat that sees the parts that make me as just parts and not as a problem that I need to solve was really liberating in an identity sense," Ms. Kern said. "Because generally, when you have a different body, you don't really see yourself."

    "I think the challenges the students faced throughout the course had a lot to do with the exchange of ideas," Ms. Jun said. "They were able to understand that no two people with a disability are alike. Being able to design uniquely means you have to have a collaborative (合作) process. We're designing with each other, not for."

    When she first started learning about the climate change from one of her elders, Fawn Sharp was invited on a helicopter flight over the Olympic Mountains to survey the Mount Anderson glacier(冰川). But the glacier was gone, melted by the warming climate. Sharp had a deep sense of loss when she discovered the glacier wasn't there anymore.

    Loss is a growing issue for people working and living on the front lines of climate change. And that gave Jennifer Wren Atkinson, a full-time lecturer at the University of Washington Bothell, US, an idea for a class.

    This term, she taught students on the Bothell campus about the emotional burdens of environmental study. She used the experiences of Nalive American tribes (部落) , scientists and activists, and asked her 24 students to face the reality that there is no easy fix -- that "this is such an intractable problem that they're going to be dealing with it for the rest of their lives.”

    Student Cody Dillon used to be a climate science skeptic (怀疑论者) . Then he did his own reading and research, and changed his mind.

    Dillon wasn't going into environmental work--he was a computer-science major. Yet, the potential for a worldwide environmental catastrophe seemed so real to him five years ago that he quit his job and became a full-time volunteer for an environmental group that worked on restoration (恢复) projects.

Six months into the work, he decided that Alkinson's class was just what he was looking for 一 a place where he could discuss his concerns about a changing climate.

Atkinson said she hopes the class helped her students prepare themselves for the amount of environmental loss that will happen over their lifetimes.

    “We are already changing the planet - . so many species are going to be lost, displaced or massively impacted (巨大影响的) ,”she said. “The future isn't going to be what they imagined.”

    Professor Smith recently persuaded 35 people, 23 of them women, to keep a diary of all their absent-minded actions for two weeks. When he came to analyze their embarrassing lapses(差错)in a scientific report, he was surprised to find that nearly all of them fell into a few groupings. Nor did the lapses appear to be entirely random(随机的).

    One of the women, for instance, on leaving her house for work one morning threw her dog her earrings and tried to fix a dog biscuit on her ear. "The explanation for this is that the brain is like a computer," explains the professor. "People program themselves to do certain activities regularly. It was the woman's custom every morning to throw her dog two biscuits and then put on her earrings. But somehow the action got reversed(颠倒的)in the program," About one in twenty of the incidents the volunteers reported were these "program assembly failures".

    Altogether the volunteers logged 433 unintentional actions that they found themselves doing—an average of twelve each. There appear to be peak periods in the day when we are at our zaniest (荒谬可笑的). These are two hours sometime between eight a.m. and noon, between four and six p.m. with a smaller peak between eight and ten p.m. "Among men the peak seems to be when a changeover in brain 'programs' occurs, as for instance between going to and from work." Women on average reported slightly more lapses—12.5 compared with 10.9 for men—maybe because they were more reliable reporters.

    An astonishing finding of the research is that the absent-minded activity is a risk of doing things in which we are skilled. Normally, you would expect that skill reduces the number of errors we make. But trying to avoid silly slips by concentrating more could make things a lot worse—even dangerous.

A Japanese start-up called Ashirase is stepping into the global market with a new navigation (导航) assistance product intended to help people with low vision.

Its new product will feature flexible vibrating (震动) bases around each foot and are put into each shoe, and a small pack that can be removed for charging (充电). Once fitted, the vibrating parts are set along the sensitive nerves on the foot and can send coded walking instructions to the user.

Its present form navigates a route that comes from a smartphone app. It can help clear up distractions by freeing up the attention that is normally needed to either listen to voice directions or check the phone. Visual-damaged users can use their hearing to listen to traffic sounds and signals, like warning beeps at crossings or sidewalks, and use their hands to carry walking sticks or other belongings.

The device is paired with an app through a Bluetooth connection. The app uses information from Google Maps or similar vendors to draw up a walking route to the destination. Based on the destination and how the user is walking, it will send signals to the device that will cause a vibration on the foot.

The device will vibrate at a regular frequency at the front of the foot to let the users know they're on the right track and should keep going straight. It will speed up the vibrations once the user is approaching a turn and needs to stop, and it will vibrate in either the left or right shoe to signal the direction the user needs to turn.

Ashirase's new tech is waterproof and washable. It can be charged at the end of the week to power through seven days of walking, accounting for three active hours each day. And it can be fitted in two types of shoes: sneakers and leather lace-up shoes.