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"The above summary does not do justice to Martyanov's truly seminal book. I can only say that I consider this book as an absolutely indispensable "must read" for every person in the USA who loves his/her country and for every person who believes that wars, especially nuclear ones, must be avoided at all costs. Just like many others (I think of Paul Craig Roberts), Martyanov is warning us that "the day of reckoning is upon us" and that the risks of war are very real, even if for most of us such an event is also unthinkable. Those in the USA who consider themselves patriots should read this book with special attention, not only because it correctly identifies the main threat to the USA, but also because it explains in detail what circumstances have resulted in the current crisis. Waving (mostly Chinese made) US flags is simply not an option anymore, neither is looking away and pretending that none of this is real. Martynov's book will also be especially interesting to those in the US armed forces who are observing the tremendous decline of US military power from inside. Who better than a former Soviet officer could not only explain, but also understand the mechanisms which have made such a decline possible?"

"This work presents the first compressive and independent analysis of the contributions of one of the most important public officials in American history.  As a graduate student more than a decade ago, I began to investigate the role that Marriner S. Eccles played during the 1930s, as both a special assistant to the secretary of the Treasury and as the chairman of the Federal Reserve Board of Governors. I was intrigued that Eccles, as a Republican businessman from Utah-and yes a Mormon-became the New Deal's most forceful advocate of Keynesian policy.  Since that time I have come to learn far more about his participation in those years, and, indeed, a good deal more about the vexed political and economic milieu in which his career as a public servant unfolded.  Although this work is clearly intended to amplify the contributions that Eccles made in important policy areas, it also seeks to correct some inaccuracies that have frequently been conveyed about the details of his participation. Moreover, his fiscal and monetary interests were so extensive that it would not be too far afield to view what follows as a history of the New Deal with Eccles as the focal point."

Bart Haagmans (Erasmus MC) concludes: "The observations made in this study provide definite proof that SARS-CoV-2 can multiply in cells of the gastrointestinal tract. However, we don't yet know whether SARS-CoV-2, present in the intestines of COVID-19 patients, plays a significant role in transmission. Our findings indicate that we should look into this possibility more closely." The current study is in line with other recent studies that identified gastrointestinal symptoms in a large fraction of COVID-19 patients and virus in the stool of patients free of respiratory symptoms. Special attention may be needed for those patients with gastrointestinal symptoms. More extensive testing using not only nose and throat swabs, but also rectal swabs or stool samples may thus be needed.

There's rarely time to write about every cool science-y story that comes our way. So this year, we're once again running a special Twelve Days of Christmas series of posts, highlighting one science story that fell through the cracks in 2020, each day from December 25 through January 5. Today: the structure of folklore can help explain how unrelated facts and false information connect into a compelling narrative framework that can then go viral as a conspiracy theory.

Optimization is a key tool in machine learning, where the goal is to achieve the best possible objective function value in a minimum amount of time. Obtaining any form of global guarantees can usually be done with convex objective functions, or with special cases such as risk minimization with one-hidden over-parameterized layer neural networks (see the June post). In this post, I will consider low-dimensional problems (imagine 10 or 20), with no constraint on running time (thus get ready for some running-times that are exponential in dimension!).

Numerous different microorganisms play an important role in the health and fitness, including humans, through their interactions with their host organism. The ability to enter into functional communication with the host also characterizes the archaea. They are basically known for their many special properties. Representatives of this group of microorganisms can also exist as so-called extremophiles under extraordinary living conditions, such as very high temperatures, high salt concentrations or in acidic environments.

The systems we use to encode expertise tend to depend on relatively slow processes of collective computation and don't typically work as measures of an individual's actual extra-institutional networks or their ability to respond to novelty. Organizations and metrics tuned to slow and stable periods that favor efficiency and specialization tend to suppress generalists and improvisation.

The phenomenon where a mutation overrides another genetic defect is known as genetic suppression and it is not unique to yeasts. Genome sequencing studies have revealed individuals who remain healthy despite carrying catastrophic inborn errors whose usual harmful effects are somehow masked by other unknown changes in their genomes.