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Big Think
- Posted on Wednesday April 15, 2026

Marketers wake up every morning convinced nobody cares about what they’re selling. Most learning and development (L&D) pros assume the opposite, that attention comes with the job title, or at least with the mandatory completion requirement.
That gap explains a lot.
Mandatory Doesn’t Mean Engaged
Think about the last compliance course you clicked through. You showed up. You moved the slider. You passed the quiz. And three days later, you remembered almost nothing.
The training counted as “done.” Nobody asked whether it worked.
Marketers don’t get that grace period. If they lose your attention, they lose the sale, and they know it in real time. That pressure changes how they think. It should change how we think, too.
Relevance Is Rocket Fuel
The fastest path to attention is relevance. Not “here’s a module on communication skills.” Real relevance. The kind that makes someone think this was made for me.
That means knowing your audience before you build a single slide. What does their day actually look like? What problems grind them down? What language do they use when they talk about their work?
The more your content connects to ... Continue Reading » - Posted on Wednesday April 15, 2026

Back in 1997, a joint venture between NASA, ESA, and the Italian Space Agency (ASI) was launched with the explicit purpose of studying the most distant naked eye planet of the Solar System: Saturn. The Cassini-Huygens mission, unlike the predecessor missions that visited Saturn — Pioneer 11, Voyager 1, and Voyager 2 — wasn’t simply a fly-by mission, but rather flew to Saturn with the intention of remaining there. After a seven year journey to get there, Cassini arrived, where it had many close encounters with Saturn’s rings, a large number of Saturn’s moons, and of course, the planet itself.
It didn’t just fly around Saturn, but rather above and below it as well, capturing views from 2004-2017 that maximized what we could learn about this prominent planet. One of the most surprising finds came early on in the mission, when the Cassini orbiter flew over the south pole of Saturn, and found something that had only ever been seen on Earth before: a hurricane with a well-defined eye wall to it. That was back in 2006, when Saturn’s south pole ... Continue Reading » - Posted on Tuesday April 14, 2026

What makes us who we are? Most of us might say that it is our background that creates our identities: our families, where we’ve lived, how we were brought up and educated, the people who have influenced us, the jobs we’ve held. But there is something far more fundamental that makes us who we are, and which transcends social and cultural experiences. This is our brain. Our brains create us. No matter where you are from, where you live or have lived, the language you speak, the color of your skin, it is our brains that give us our identities.
In the past, some disagreed, arguing instead as Descartes did that our personal identity — our “self” — is separate from the brain. Most modern views, however, consider the brain to be the basis for all the experiences we have of our selves. Using new scanning techniques, some neuroscientists have even attempted to define the brain region where “the self” might reside. However, as the philosopher Daniel Dennett drily put it: “It is a category mistake to start looking around for ... Continue Reading » - Posted on Tuesday April 14, 2026

In the early 1980s, I hitchhiked from London to Cape Town at the tip of South Africa. The overland trip took more than six months, and I traveled about 11,000 miles — almost half the circumference of the Earth. I dropped down through Europe, crossed into Morocco via the Strait of Gibraltar, and then traveled across North Africa. From Egypt, I followed the Nile all the way to its source in East Africa before making my way down to South Africa, which was still under apartheid at the time.
I was no newbie to hitchhiking. Since high school, I had hitched rides across the United States numerous times, traveling from coast to coast on many of the nation’s major interstate freeways. Hitching was also the main way I moved between my home in the Midwest and my university on the East Coast. I loved hitchhiking because it offered a fantastic way to get to know an amazing cross section of people from many different classes and races and walks of life. Hitching is particularly good at connecting you to those living ... Continue Reading » - Posted on Tuesday April 14, 2026
Mary Beard uncovers the spectacle of the Ancient Roman parade, the Roman Triumph. Simultaneously a declaration of Roman supremacy and an admission that conquest may be theft at scale, these Roman propaganda events were so terrifying that Cleopatra famously chose death over appearing in one.
This video Rome’s triumph was the ancient world’s most effective piece of propaganda is featured on Big Think.
Continue Reading » - Posted on Tuesday April 14, 2026

Out there in the vast depths of space, from our Solar System to the farthest reaches of the Universe, all sorts of objects can be found. There are enormous numbers of small bodies, from tiny moonlets to asteroids to comets and more, that simply aren’t massive enough to pull themselves into hydrostatic equilibrium. Beyond that, there are round planetary bodies — numerous moons, dwarf planets, and even rocky worlds themselves — that have enough mass to get that job done. At still higher masses, we find gas giant planets, brown dwarfs, and stars of all different colors, temperatures, and luminosities that will persist in shining for a wide variety of durations.
Once a star dies, there are a number of possible fates that can ensue as well, as a stellar corpse can remain as a white dwarf, a neutron star, or a black hole. And yet, throughout the entirety of this cosmic story, there’s just one parameter that overwhelmingly determines what type of object we’ll wind up with, as well as what properties it will possess: mass. In a straightforward fashion, ... Continue Reading » - Posted on Monday April 13, 2026

Authors write novels for many reasons. Anthony Burgess, of A Clockwork Orange fame, was once described as a man “always on a money-fishing expedition.” Ernest Vincent Wright wrote Gadsby, a novel that avoids using the letter E, as a self-imposed challenge. Joan Didion processed her grief following the sudden death of her husband in her memoir The Year of Magical Thinking.
The books on this list were basically written as propaganda. Their authors devised them to advance a particular ideology or party line, with the hope that readers would be persuaded to take up the cause. We’ll dive into why they were written, what ideology they promoted, and how effective they were at achieving their goals.
Before that, we should note that we aren’t using the term propaganda in a moral or artistic sense. We’re instead using it to describe works that place heavy emphasis on influencing readers through symbolism and emotional appeals. Whether they are narrative masterpieces or utter dreck, whether they conform to reality or distort it beyond recognition, and whether we agree or disagree isn’t the point. For these ... Continue Reading » - Posted on Monday April 13, 2026

For 15 years now, the expanding Universe hasn’t added up.
This graph shows a comparison between the value of H0, or the expansion rate today, as derived from Hubble Space Telescope Cepheids and anchors as well as other subsamples of JWST Cepheids (or other types of stars) and anchors. A comparison to Planck, which uses the early relic method instead of the distance ladder method, is also shown. Very clearly, the distance ladder and early relic methods do not yield mutually compatible results.
Credit: A.G. Riess et al., Astrophysical Journal submitted, arXiv:2408.11770, 2024
Different measurement methods should converge on the same answer.
A large class of early relic methods, involving either the CMB and/or BAO (with a specific focus on DESI publications), all favor a Universe expanding at ~67 km/s/Mpc. Although there are a few groups that have outlier values for distance ladder measurements (including the CCHP group, shown as the second-from-bottom point), the strongest measurements, from the SH0ES and Pantheon+ collaborations, for instance, favor a value of ~73 km/s/Mpc, as shown here with smaller error bars. The two sets of values disagree at ... Continue Reading » - Posted on Saturday April 11, 2026

Whenever a new star forms, several processes appear to be nearly universal. A cloud of cold molecular gas contracts, fragments, and rapidly collapses in certain places. The densest, coldest clumps of gas contract first, drawing in larger and larger amounts of matter onto them. A large, massive enough clump will heat up and have a random shape: collapsing along the shortest axis first, forming a protostar at the center surrounded by a disk of material. That’s where the story of planet formation begins.
Assuming the conditions in the disk are sufficient, clumps will begin to form, and over hundreds of thousands to millions of years, the first protoplanets and then full-fledged planets will arise: a relatively rapid cosmic process, that’s usually all complete within a mere 10 million years: a blink of a cosmic eye in the history of our own 4.5 billion year old Solar System. However, by looking at the youngest stellar and planetary systems, we can uncover many details that are common to planetary systems in general, and in turn, we can learn how our own Solar System ... Continue Reading » - Posted on Friday April 10, 2026

Due to its Nazi past, Germany’s post–World War II militant democracy has been unusually aggressive in banning hatred and extremism. Early postwar laws prohibited Nazi symbols, propaganda, and organizations. A turning point came in 1960 with the “swastika epidemic” — a surge of anti-Semitic graffiti and attacks on synagogues. In response, the German parliament made it illegal to incite hatred or insult “segments of the population” in ways that might disturb public peace. The epidemic was later revealed to be a KGB “active measures” campaign. Despite this, Germany has continually expanded its hate-speech laws to cover areas such as incitement, Holocaust denial, and the distribution of propaganda and symbols of unconstitutional organizations. Even criminal defamation laws can function as hate-speech provisions under this broad framework.
While Germany’s speech laws were intended to protect minorities and democracy, they now frequently shield governments from criticism. Alarmingly, they are sometimes used against those minorities they were designed to protect — such as the frequent prosecutions of Muslims and Palestinians during pro-Palestinian protests. This effectively leaves a predominantly white, German political administrative class to determine ... Continue Reading »
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