Lifeboat Foundation

The octonions themselves will never be “the answer” to how reality works, but they do provide a powerful, generalized mathematical structure that has its own unique properties. It includes real, complex, and quaternion mathematics, but also introduces fundamentally unique mathematical properties that can be applied to physics to make novel — but speculative and hitherto unsupported — predictions.

Octonions can give us and idea of which possibilities might be compelling to look at in terms of extensions to known physics and which ones might be less interesting, but there are no concrete observables predicted by the octonions themselves. Pierre Ramond, my former professor who taught me about octonions and Lie groups in physics, was fond of saying, “octonions are to physics what the Sirens were to Ulysses.” They definitely have an allure, but if you dive in, they may drag you to a hypnotic, inescapable doom.

Their mathematical structure holds an incredible richness, but nobody knows whether that richness means anything for our Universe or not.

The City of New Orleans has suffered a cybersecurity attack serious enough for Mayor LaToya Cantrell to declare a state of emergency.

The attack started at 5 a.m. CST on Friday, December 13, according to the City of New Orleans’ emergency preparedness campaign, NOLA Ready, managed by the Office of Homeland Security and Emergency Preparedness. NOLA Ready tweeted that “suspicious activity was detected on the City’s network,” and as investigations progressed, “activity indicating a cybersecurity incident was detected around 11 am.” As a precautionary measure, the NOLA tweet confirmed, the City’s IT department gave the order for all employees to power down computers and disconnect from Wi-Fi. All City servers were also powered down, and employees told to unplug any of their devices.

One of New Jersey’s largest hospital systems said it was hit this month by a ransomware attack that disrupted care across its clinics and 17 hospitals.

Hackensack Meridian Health said Friday the attack began Dec. 2 and forced it to cancel some surgical and other procedures, though no patients were harmed and its emergency rooms kept seeing patients.

The Times

Site called iStreamItAll offered access to a vast trove of pirated movies and TV shows, ripping off copyright owners.

Here’s the first map of the magnetic mineral magnetite in the human brain. Turns out that our brain stem may be full of it.

Carnegie Mellon University computer scientists have taken a deep learning method that has revolutionized face recognition and other image-based applications in recent years and redirected its power to explore the relationship between genes.

The trick, they say, is to transform massive amounts of gene expression data into something more image-like. Convolutional neural networks (CNNs), which are adept at analyzing visual imagery, can then infer which genes are interacting with each other. The CNNs outperform existing methods at this task.

The researchers’ report on how CNNs can help identify disease-related genes and developmental and genetic pathways that might be targets for drugs is being published today in the Proceedings of the National Academy of Science. But Ziv Bar-Joseph, professor of computational biology and machine learning, said the applications for the new method, called CNNC, could go far beyond gene interactions.

A technology for propelling spacecraft using a “sail” pushed by light has passed an initial test, with the prototype device staying centered in a laser beam.

To snap close-up photos of planets outside our Solar System (exoplanets), some researchers are proposing the use of a fleet of “light sails” propelled by powerful Earth-bound lasers. A new experiment has demonstrated a possible sail design that uses diffraction gratings, rather than the reflective mirrors that have been used in previous sail designs. The gratings deflect an incoming laser beam at an angle, creating a sideways force that keeps the sail aligned with the beam’s center. Further testing is needed, but the team developing the sail is hopeful that their “beam-rider” technology could guide probes to faraway stars or to closer targets in our own Solar System.

Amazon has been steadily growing its logistics operation over the last decade, and it now delivers more than half of all Amazon packages in the US, according to an estimate from Morgan Stanley published on Thursday and reported by CNBC. That’s a staggering increase over the course of the last few years. It means Amazon, which now operates its own freighters and cargo planes, is accelerating its push to own the entire logistics chain and end its relationship with companies like FedEx and UPS.

At the current rate, Amazon is set to pass both FedEx and UPS in US package volume, with the company currently delivering 2.5 billion packages per year compared to FedEx’s 3 billion and UPS’s 4.7 billion, Morgan Stanley says. Amazon’s number doubled in just the last year alone, from delivering about 20 percent of all of its own packages to now about half. A substantial contributing factor here is Amazon’s new one-day Prime shipping initiative, which it kicked off earlier this year and promises to bring to more markets and more products as time goes on.

“Customers love the transition of Prime from two days to one day — they’ve already ordered billions of items with free one-day delivery this year. It’s a big investment, and it’s the right long-term decision for customers,” CEO Jeff Bezos said of one-day Prime shipping on an earnings call in October. Amazon did not immediately respond to a request for comment regarding its package volume.