CERN-Critics: LHC restart is a sad day for science and humanity!
These days, CERN has restarted the world’s biggest particle collider, the so-called “Big Bang Machine” LHC at CERN. After a hundreds of Million Euros upgrade of the world’s biggest machine, CERN plans to smash particles at double the energies of before. This poses, one would hope, certain eventually small (?), but fundamentally unpredictable catastrophic risks to planet Earth.
Basically the same group of critics, including Professors and Doctors, that had previously filed a law suit against CERN in the US and Europe, still opposes the restart for basically the same reasons. Dangers of: (“Micro”-)Black Holes, Strangelets, Vacuum Bubbles, etc., etc. are of course and maybe will forever be — still in discussion. No specific improvements concerning the safety assessment of the LHC have been conducted by CERN or anybody meanwhile. There is still no proper and really independent risk assessment (the ‘LSAG-report’ has been done by CERN itself) — and the science of risk research is still not really involved in the issue. This is a scientific and political scandal and that’s why the restart is a sad day for science and humanity.
The scientific network “LHC-Critique” speaks for a stop of any public sponsorship of gigantomanic particle colliders.
Just to demonstrate how speculative this research is: Even CERN has to admit, that the so called “Higgs Boson” was discovered — only “probably”. Very probably, mankind will never find any use for the “Higgs Boson”. Here we are not talking about the use of collider technology in medical concerns. It could be a minor, but very improbable advantage for mankind to comprehend the Big Bang one day. But it would surely be fatal – how the Atomic Age has already demonstrated — to know how to handle this or other extreme phenomena in the universe.
Within the next Billions of years, mankind would have enough problems without CERN.
For the past 25 years, my beat as a journalist has been covering those moments in time when science fiction became science fact. As a result, and on a good number of occasions—like when the first artificial vision implant was turned on or when the first private spaceship was launched—I was lucky enough to be in the room when history happened.
These moments are also the subject of my next book: Tomorrowland: Our Journey From Science Fiction to Science Fact, which hits stores in early May. As the title suggests, this book is an investigation into those transformational sci-fi to sci-fact moments and—more specifically—the incredibly disruptive impact they have on culture. Read more
Robert Szczerba | The Next Web“The advancement of technology generally evokes a range of emotions in people from all walks of life. Some view technology as a great evil that slowly diminishes our humanity, while others view it as a way to bring the world closer together and to help solve some of our greatest challenges.” Read more
Our smartphones can do a lot—compute, pin down our location, sense motion and orientation, send and receive wireless signals, take photographs and video. What if you could also learn exactly what chemical components were present in any object? A new invention out of Israel aims to enable just that.
“The tricorder is no longer science fiction,” a recent Tel Aviv University (TAU) article declared. While a number devices in recent years have inspired similar comparisons, maybe this one is a little closer. Read more
‘New Narratives: Innovation for Jobs’ is a series by i4j (Innovation for Jobs) and the GPA exploring perspectives on important topics that will impact the future of work, jobs and employment.
About i4j: (iiij.org/i4j) Innovation for Jobs conferences bring together individuals from the public and private sectors to discuss the changing economy. “We engage in initiatives creating structures for developing shared language across silos. The starting point for any innovation is the creation of shared language, enabling stakeholders and change agents to interact horizontally.”
This film was created at the Mountain View 2015 i4j Conference. What are your hopes and fears about the future of meaningful work?
Vint Cerf at i4j: Employment Disruption Does Not Need to be Destruction
About Vint Cerf: Vinton G. Cerf is vice president and Chief Internet Evangelist for Google. He contributes to global policy development and continued spread of the Internet. Widely known as one of the “Fathers of the Internet,” Cerf is the co-designer of the TCP/IP protocols and the architecture of the Internet. He has served in executive positions at MCI, the Corporation for National Research Initiatives and the Defense Advanced Research Projects Agency and on the faculty of Stanford University. Vint Cerf served as chairman of the board of the Internet Corporation for Assigned Names and Numbers (ICANN) from 2000–2007 and has been a Visiting Scientist at the Jet Propulsion Laboratory since 1998. Cerf served as founding president of the Internet Society (ISOC) from 1992–1995. Cerf is a Fellow of the IEEE, ACM, and American Association for the Advancement of Science, the American Academy of Arts and Sciences, the International Engineering Consortium, the Computer History Museum, the British Computer Society, the Worshipful Company of Information Technologists and a member of the National Academy of Engineering. He currently serves as Past President of the Association for Computing Machinery, chairman of the American Registry for Internet Numbers (ARIN), chairman of StopBadWare and recently completed his term as Chairman of the Visiting Committee on Advanced Technology for the US National Institute of Standards and Technology. President Obama appointed him to the National Science Board in 2012. Cerf is a recipient of numerous awards and commendations in connection with his work on the Internet, including the US Presidential Medal of Freedom, US National Medal of Technology, the Queen Elizabeth Prize for Engineering, the Prince of Asturias Award, the Tunisian National Medal of Science, the Japan Prize, the Charles Stark Draper award, the ACM Turing Award, Officer of the Legion d’Honneur and 21 honorary degrees. In December 1994, People magazine identified Cerf as one of that year’s “25 Most Intriguing People.”
David Nordfors and Vint Cerf at i4j: Innovation Ecosystems Disrupting Unemployment
About David Nordfors:
David Nordfors is CEO and co-founder of IIIJ and the chair of the i4j Summit. He was previously co-founder and Executive Director of the Center for Innovation and Communication at Stanford University. He was one of the World Economic Forum Innovation 100 in 2009, and has served on WEF Global Agenda Councils. He serves on advisory boards of the Poynter Institute, Discern Investment Analytics and Black & Veatch. He is an adjunct professor at IDC Herzliya in Israel, a visiting professor at Tallinn University, the Tecnologico de Monterrey, and the Deutsche Welle Akademie. He was advisor to the Director General at VINNOVA, the Swedish Agency for Innovation Systems, where he co-initiated the national Swedish Incubator System and set up a bi-national R&D fund between Sweden and Israel for mobile applications. He was Director of Research Funding of the Knowledge Foundation, KK-stiftelsen, administering an endowment of $300MUSD, building a funding framework underwriting over a hundred innovation initiatives between universities and industry. He initiated and headed the first hearing about the Internet to be held by the Swedish Parliament. He has a Ph.D. in physics from the Uppsala University and did his postdoc in Theoretical Chemistry in Heidelberg, Germany.
Marjory Blumenthal at i4j: Our Blindspots in Forecasting the Future of Work
About Marjory Blumenthal:
Marjory Blumenthal is the Executive Director of the President’s Council of Advisors on Science and Technology (PCAST). She joined PCAST after a decade combining academic leadership at Georgetown University with research and advisory activities (including as a RAND adjunct) aimed at understanding Internet and cybersecurity technology trends and policy implications. At PCAST, she manages the Council and its program of analyses yielding policy recommendations to the President and the Administration, and she fosters the implementation of PCAST recommendations. This work spans the broad landscape of science and technology, addressing implications for the economy, society, and government programs. It engages PCAST’s approximately 20 distinguished scientists and engineers from industry and academia plus hundreds of experts consulted for study-projects and the Council’s regular meetings. Working under tight time constraints, in May 2014 she produced the PCAST report, Big Data and Privacy: A Technological Perspective. Between July 1987 and August 2003, Marjory was the Executive Director of the National Academies’ Computer Science and Telecommunications Board, producing over 60 influential reports that frequently addressed the evolution of the Internet and/or cybersecurity. Marjory did her undergraduate work at Brown University and her graduate work at Harvard University.
John Hagel at i4j: The (Painful) Big Shift to Meaningful Work
About John Hagel:
John Hagel is a consultant and author who specializes in the intersection of business strategy and information technology. In 2007, Hagel, along with John Seely Brown, founded the Deloitte Center for the Edge, a research center based in Silicon Valley. Hagel is also involved with a number of other organizations, including the World Economic Forum, the Santa Fe Institute, and the Aspen Institute. He is credited with inventing the term “infomediary” in his book, NetWorth with Marc Singer, published by the Harvard Business School Press in 1999. He has published a series of seven books including the best-selling business books, Net Gain, Net Worth, Out of the Box, The Only Sustainable Edge and, most recently, The Power of Pull.
Esther Wojcicki at i4j: Educating for the Unforeseen Jobs of the New Economy
About Esther Wojcicki:
Esther Wojcicki is an educational innovator using journalism courses as a vehicle for training youth in problem-based project-oriented learning, developing skill sets for the innovation economy. Applying this method, she has headed the development of what has become the largest high school journalism program in the U.S involving 600 students, at the Palo Alto High School. She was the 1990 Northern California Journalism teacher of the year, the 2002 California State Teacher Credentialing Commission Teacher of the Year, was recognized for inspiration and excellence in scholastic journalism advising by the National Scholastic Press Association in 2008, and was awarded the Gold Key Award by Columbia University Scholastic Press in 2009. She has served on the University of California Office of the President Curriculum Committee. She served as the Google educational consultant, co-designing the Google Teacher Academy and Google Faculty Institute. She holds a B.A. degree from UC Berkeley in English and Political Science, and a M.A. in Educational Technology from San Jose State University. She also has a Master’s from the Graduate School of Journalism at Berkeley and an advanced degree in French and French History from the Sorbonne, Paris. She has worked as a professional journalist for multiple publications and now blogs regularly for HuffingtonPost.
Curt Carlson at i4j: The Practice of Innovation
About Curt Carlson:
Curt Carlson was SRI’s President and CEO from 1998 to 2014. During this time SRI’s revenue more than tripled and SRI became a global model for the systematic creation of high-value innovations, such as HDTV, Intuitive Surgical, Siri (now on the iPhone), and other world changing advances. Mayfield Ventures partner, David Ladd, said, “SRI is now the leading company in the world at converting its technology into commercial value”. Carlson is a pioneer in the development and use of innovation best practices and an evangelist for innovation, education, and economic development, sharing best practices with government agencies, businesses, and foundations around the world. His insights on R&D and value creation led to creation of the Five Disciplines of Innovation process, used by companies, universities, and government agencies in the United States, Sweden, Finland, Chile, Malaysia, Japan, Brazil, and Taiwan. They are applying these innovation practices for growth, prosperity, and job creation. Before joining SRI, Carlson worked at RCA, GE, and the Sarnoff Corporation, which became part of SRI in 1987. In 1977 he started and helped lead the high-definition television (HDTV) program that became the U.S. standard and won an Emmy Award in 1997. Another team started by Carlson won an Emmy for satellite broadcast image quality in 2001.
He has helped form more than two-dozen new companies. Carlson was named a Fellow of the National Academy of Inventors in 2012. In 2006, Carlson won the Otto Schade Prize for Display Performance and Image Quality from the Society for Information Display with Roger Cohen. He served on President Obama’s National Advisory Council on Innovation and Entrepreneurship. He is a member of the Scientific Advisory Board of the Singapore National Research Foundation and Taiwan’s Scientific Advisory Board. In addition he serves on the U.S. National Science Foundation’s Engineering Advisory Council and has served on the Air Force Science Advisory Board, the Defense Science Board, various National Laboratory Review Panels, and the National Academy of Engineering Committee on Manufacturing, Design, and Innovation. He has been on numerous commercial boards, including Nuance Communications, Pyramid Vision Technologies, Sensar, and Sarif. He was a member of the General Motors’ Science and Technology Advisory Board. Carlson has received honorary degrees from the Malaysian Technical University (MTU), Stevens Institute of Technology, Kettering University, and Worcester Polytechnic Institute, where he is a trustee. With William Wilmot, Carlson wrote Innovation: The Five Disciplines for Creating What Customers Want, published by Random House and selected by BusinessWeek as one of the top 10 business books for 2006. Carlson received his B.S. degree in physics from WPI and was named in Who’s Who Among Students. He is a member of Tau Beta Pi and Skull. His M.S. and Ph.D. degrees were from Rutgers University. Carlson has published or presented numerous technical publications and holds fundamental patents in the fields of image quality, image coding, and computer vision.
Robin Chase at i4j: New Labor Systems can Save the Climate
About Robin Chase:
Robin Chase is a transportation entrepreneur. She is founder and former CEO of Zipcar, the largest carsharing company in the world; Buzzcar, a service that brings together car owners and drivers in a carsharing marketplace in France; and GoLoco, an online ridesharing community. She is also Executive Chairman of Veniam, a vehicle communications company building the networking fabric for the Internet of Moving Things. She is on the Boards of the Massachusetts Department of Transportation, the World Resources Institute, and Tucows. She also served on the National Advisory Council for Innovation & Entrepreneurship for the US Department of Commerce, the Intelligent Transportations Systems Program Advisory Committee for the US Department of Transportation, the OECD’s International Transport Forum Advisory Board the Massachusetts Governor’s Transportation Transition Working Group, and Boston Mayor’s Wireless Task Force. Robin lectures widely, has been frequently featured in the major media, and has received many awards in the areas of innovation, design, and environment, including Time 100 Most Influential People, Fast Company Fast 50 Innovators, and BusinessWeek Top 10 Designers. Robin graduated from Wellesley College and MIT’s Sloan School of Management, was a Harvard University Loeb Fellow, and received an honorary Doctorate of Design from the Illinois Institute of Technology.
Mikko Kosonen at i4j: A Vision for Sustainable Wellbeing
About Mikko Kosonen:
Mikko Kosonen has been the President of the Finnish Innovation Fund Sitra since 2008. He worked for Nokia between 1984 and 2007, his last two positions being Senior Vice President of Strategy and Business Infrastructure and Senior Advisor. Kosonen has served as a board member with a number of companies and institutions, including Itella Corporation, Kesko, Kuntien Tiera Oy, Telia-Sonera, Fifth Element Oy, Technology Academy Finland and the Foundation for Economic Education.Mikko Kosonen completed his PhD in International Business at the Helsinki School of Economics in 1991. He was awarded Honorary Professorship of Budapest Business School in 2012. He has published several books and articles on strategic management, most recently Fast Strategy – How Strategic Agility will help you stay ahead of the game (2008) and New Deal at the Top – Harvard Business Review (2007), both with Professor Yves Doz.
Steve Jurvetson at i4j: Going Long on the Future of Work?
Steve Jurvetson is a Managing Director of Draper Fisher Jurvetson, a venture capital firm. He was the founding VC investor in Hotmail (MSFT), Interwoven (IWOV), Kana (KANA), and NeoPhotonics (NPTN). He also led the firm’s investments in other companies which were then acquired for $12 billion in aggregate. Current Board positions include SpaceX, Synthetic Genomics, and Tesla Motors (TSLA). Previously, Steve was an R&D Engineer at Hewlett-Packard, where seven of his communications chip designs were fabricated. His prior technical experience also includes programming, materials science research (TEM atomic imaging of GaAs), and computer design at HP’s PC Division, the Center for Materials Research, and Mostek. He has also worked in product marketing at Apple and NeXT Software. Steve also holds an MS in Electrical Engineering from Stanford. He received his MBA from the Stanford Business School, where he was an Arjay Miller Scholar. He also serves on the Advisory Boards of SRI International, STVP, and the Stanford Engineering Venture Fund and is Co-Chair of the NanoBusiness Alliance. He was honored as “The Valley’s Sharpest VC” on the cover of Business 2.0 In 2005, Steve was honored as a Young Global Leader by the World Economic Forum and a Distinguished Alumnus by St. Mark’s, where he was the 2010 Commencement Speaker.
Astro Teller at i4j: Innovation Requires Inspired Workers (Systematizing Innovation)
About Astro Teller:
Dr. Astro Teller currently oversees Google[x], Google’s moonshot factory for building magical, audaciously impactful ideas that can be brought to reality through science and technology. Before joining Google, Astro was the co-founding CEO of Cerebellum Capital, Inc, an AI-based investment management firm. Previously, Astro was the co-founding CEO of BodyMedia, a leading wearable body monitoring company. Prior to BodyMedia, Dr. Teller was co-founding CEO of SANDbOX AD, an advanced development technology incubator. Dr. Teller holds a BS in computer science and an MS in symbolic and heuristic computation, both from Stanford, and a Ph.D. in artificial intelligence from Carnegie Mellon, where he was a recipient of the Hertz fellowship. Through his work as a scientist, inventor and entrepreneur, Dr. Teller holds many U.S. and international patents related to his work in hardware and software technology. Astro is also a successful novelist and screenwriter, with a new book out entitled “Sacred Cows.”
Astro Teller at i4j: Innovation that Works Can’t Wait for Miracles
Modern machines, powerful and clever, have enabled us to attempt seemingly impossible tasks, like traveling to the moon. Now, mere decades after Apollo’s computers guided us to the lunar surface, millions carry vastly more processing power in their pockets. What once seemed science fiction—it’s possible today.
The incredible acceleration and exponential development of machines is driven by our unsatisfiable curiosity and constant drive for progress. And there is little doubt the rate of change will continue as our curious minds push into the unknown. Read more
A realistic and desirable human destination would produce a different space program than what we have today.
“We reach for new heights and reveal the unknown for the benefit of humankind.” This is NASA’s Vision Statement. This is NASA’s reason for being, its purpose. This is a vision statement for science and knowledge. This vision statement was crafted in a solar system that has only one planet that is environmentally friendly to human life.
Thanks to the ongoing search for exoplanets, we’ve identified several planets in our galaxy that are Earth sized and in their star’s habitable zone. Based on statistics, potentially billions more are waiting to be found. We are just now developing the technology to detect them. But we’re nowhere near having the technology needed to get to visit them. They are simply too far away.
Now here is where I’d like to pose a what if question: What if there was another habitable planet just like Earth, right here in our own solar system? What would Earth’s space programs look like, if anyone with a good telescope could look up and see another world with oceans, and continents, and clouds, and green forests? I think that it is safe to say that space programs in this imaginary solar system would be vastly different than ours today. This is conjecture, but it seems likely that the vision statement above, would be more in line with making that new world available for humanity.
Of course the key difference between our present reality and this imaginary scenario is the existence of an obviously desirable destination relatively close by to Earth. This lack of obviously desirable destinations has shaped space programs into the form we see them today. The science oriented form described in the current NASA vision statement is a good example.
It has been said that leadership begins with a vision. To be compelling, a vision describes a desirable end state to be obtained. In the case of the fictional scenario with another Earth like planet in the solar system, that leadership vision might include making it possible for people to move freely to this new world.
As an analogy, in the mid 1800’s, the transcontinental vision (paraphrased) was to secure the U.S. position on the Pacific through a speedy and direct means of travel from one coast to the other. That vision did not include establishing and building the city of San Francisco! The prior existence of San Francisco, enabled the vision of a transcontinental railroad.
Since our situation lacks a visible desirable destination, a bit more effort is required in the vision department. We know that the solar system contains all the resources we need in order to construct vast places for people to live. Immense structures with forests, streams and farmland as advocated by Dr. Gerard O’Neill back in the 1970’s are all possible. We can achieve the same vision of having another habitable planet in this solar system, we just have to add the intermediate step of a vision to develop the manufacturing capability to construct our own desirable destinations!
Using the transcontinental vision as a guide, it is premature for the space vision to focus on sending millions of people out into space, since apart from the International Space Station, there are no destinations yet! No, to get to the transcontinental vision for space, we first need a vision of building a San Francisco in space! But in order for that vision to be considered, it must be realistic. The focus would be on developing the tools and robots necessary to rapidly and economically build up in-space manufacturing industries that can begin the construction of the first villages that will grow into the human cities.
Even though we do not have another Earth in our solar system, it is possible to envision the creation of other Earth equivalents. This leap in leadership would produce a vision unlike what we have now. This new vision, focused on manufacturing and development utilizing the resources of our solar system, would empower capabilities for even greater accomplishments in the future.
For most of the last century, the study of emotions was not considered serious science. The problem was subjectivity. Science is objective, rigorously objective. Emotions, though, are internal states, so the only way to study them is through subjective inference (essentially asking people to report how they feel). But — because people lie, because we often misinterpret our emotions and because comparisons between subjects, that is the depth of my anger versus your anger, is impossible to measure—there’s no objective data to be found.
One of the things that I’ve always liked about Star Trek, is the concept of a galaxy spanning civilization. I would expect that before we ever get to that point, we will have a civilization that spans our solar system. Having a solar system spanning civilization has many advantages. It would give us access to resources many times greater than what is found here on Earth. It also provides the opportunity for civilization to expand, and in a worst case scenario, help ensure the survival of humanity.
Millions of people living in spacious environmentally controlled cities on planetary surfaces and in rotating cylinders in free space, with industry that extends from Mercury to the comets is to me, a grand vision worthy of an ambitious civilization. But trying to make that vision a reality will be difficult. The International Space Station has the capacity to house just six people and cost approximately $100B to put in place. With a little simple division, that works out to about $17B per inhabitant! If we used that admittedly crude figure, it would cost $17 trillion to build a 1,000 person habitat in Earth orbit. Clearly, the approach we used to build the ISS will not work for building a solar system civilization!
The ISS model relies on building everything on Earth, and launching it into space. A different model championed by Dr. Philip Metzger, would develop industrial capacity in space, using resources close to home, such as from the Moon. This has the potential to greatly reduce the cost of building and maintaining systems in space. But how to develop that industrial capacity? Remember we can’t afford to launch and house thousands of workers from Earth. The answer it would seem, is with advanced robotics and advanced manufacturing.
But is even this possible? The good news is that advanced robotics and advanced manufacturing are already being rapidly developed here on Earth. The driver for this development is economics, not space. These new tools will still have to be modified to work in the harsh environment of space, and with resources that are different from what are commonly used here on Earth. While learning to adapt those technologies to the Moon and elsewhere in the solar system is not trivial, it is certainly better that having to develop them from scratch!
Advanced robots are already having a very positive impact on our economy and play a significant role in what is referred to as next shoring. Next shoring is the move to bring manufacturing closer to the customer. For U.S. customers, that means the return of manufacturing to the U.S. This only makes business sense if the manufacturing costs are as low or lower here, than elsewhere. It is evident that the labor share of manufacturing is lower in those countries that have a high degree of automation. We are getting closer and closer to the cost of materials and transportation being the main drivers in manufactured goods. This is just what we would like to see happen for our solar system civilization. Developing materials and transportation systems from local resources through automation will drive down the cost of opening up the solar system.
While this is great news for developing space, there are implications for our terrestrial civilization. Remember the push for automation in manufacturing isn’t driven by a space need, it is driven by Earthly economics. That means getting to market faster with a better product and at a lower cost. The implication to our terrestrial civilization is twofold. First, manufacturing corporations see greater productivity per employee. This makes sense in that you can increase productivity by adding robots while maintaining or even reducing the workforce. This equates to greater profits and happier shareholders! The downside of that increased productivity however, is a reduction in job growth, if not an outright decline. The very technologies that will make a solar system civilization possible may very well stifle the job market here.
Are people worried about this? You bet they are! This issue became apparent at the 2015 SXSW Festival in Texas. At that event a protest (a staged marketing stunt as reported in IO9) to “stop the robots,” occurred. Much to the surprise of the organizers, this protest generated a lot more attention than they planned, and was picked up by multiple news organizations. It would seem that this interest is driven by very real personal concerns that people have about losing jobs to robots.
Now this is where things get interesting. Economics is driving the development of advanced robots. These advanced robots enable space development but can potentially hurt the job market. From a systems viewpoint, we cannot champion the arrival of advanced robots as a boon for both industry and space development, without considering the potential downside.
People need jobs, and not surprisingly, they particularly like important work. We need to welcome the benefits that advanced robotics bring and at the same time, we need to be proactive in stepping up to the challenges that come along with the benefits. There are lots of ways to address this issue, but it is apparent from the concern shown at SXSW, that this is a conversation that needs to begin sooner rather than later.
We do live in a changing world, which is changing at an ever increasing pace. As leaders, we can chose to either react to the changes being brought on by a growing robotic workforce, or we can chose to lead the transformation of our institutions to successfully accommodate that change. If we chose to lead, the first step, as identified by Professor John Kotter, is a sense of urgency. That sense seems already to be building. Next steps are to develop a vision for ways to accommodate the necessary changes, and building coalitions necessary to implement it. It might be wise to start looking at these steps now.
Like any complex problem, multiple approaches will most likely be needed in order to address workforce disruption. With broad discussion, planning and leadership now, we can mitigate the downside issues, while enabling a strengthened economy now and a bright future among the stars.
The world is urbanizing—and fast. Why are cities so popular?
They’re where the opportunities are. In 2014, the world’s 300 largest cities accounted for 20 percent of the world’s population and nearly half of global output. It is estimated that growing cities could bring nearly $30 trillion a year into the global economy by 2025.
As we rapidly urbanize—and 70 percent of urban growth takes place in emerging economies—understanding cities becomes critical. How can we, for example, improve livability and resource management? Manage disease and sanitation?
“The advancement of technology generally evokes a range of emotions in people from all walks of life. Some view technology as a great evil that slowly diminishes our humanity, while others view it as a way to bring the world closer together and to help solve some of our greatest challenges.” 
