Intellect PlusCards starting with D
3,445 cards. Page 45 of 58.
Do monkeys make better financial decisions than humans?Yale psychologist Laurie Santos investigates the roots of human irrationality by studying primate decision-making. This talk explores how our evolutionary history influences moder…
Do monopolies actually drive innovation or just create market inefficiency?Monopolies are often associated with deadweight loss and corruption, but they also play a complex role in incentivizing research. This video examines the tension between market ef…
Do multivitamins actually make healthy people healthier?For decades, we have swallowed colorful tablets to prevent disease and extend life. Yet, massive clinical analyses of hundreds of thousands of participants suggest that for the av…
Do museums tell the truth when exhibiting artifacts from the Holy Land?Morag M. Kersel examines the ethical weight museums carry when displaying sacred relics. This lecture explores how institutions balance their roles as educators and custodians whi…
Do national maternity leave policies actually achieve their intended societal and economic goals?Maternity leave policies vary significantly across the globe. This video examines the effectiveness of these systems, drawing on research regarding labor market transitions, ferti…
Do Neandertal burial practices reveal a shared sense of humanity with our own species?This video examines the burial rituals of Neandertals to explore what these ancient practices suggest about their cognitive and emotional lives. By looking at how our ancient cous…
Do non-human animals deserve our moral consideration?Explore the philosophical debate surrounding the treatment of animals and whether their interests should be weighed equally with our own.
Do not panic when paint spills; here is how to clean it quickly.Paint spills can appear daunting, but removing them from most surfaces is straightforward if you act with haste and use the correct cleaning products. Paint expert Mauro Henrique …
Do objects possess a hidden, unchangeable essence that defines their true identity?Essentialism is the ancient philosophical view that things have an underlying nature—a necessary essence—that makes them what they are. While this concept once anchored biology an…
Do our moral instincts hold up when a life-or-death decision becomes reality?In surveys, most people claim they would sacrifice one person to save five. But what happens when the trolley problem moves from a thought experiment to a realistic simulation? Un…
Do our physical sensations of love actually map to specific organs?We often describe love through physical metaphors like a broken heart or butterflies in the stomach. This video examines the scientific reality behind these common expressions, ex…
Do overdue library fines actually prevent books from being returned to the library?Librarian Dawn Wacek argues that the fear of overdue fines acts as a barrier, keeping people away from libraries. This talk examines whether these penalties achieve their intended…
Do parrots actually understand the words they mimic?Beyond mere mimicry, parrots possess a level of intelligence that suggests their vocalizations carry significant meaning. This video explores the cognitive depth behind the squawk…
Do Parrots Really Live a Human Lifetime?Captive records give one Cacatua moluccensis a recorded 92 years and give average zoo lifespans for named parrot species, while wild parrots offer survival rates rather than verif…
Do performance air filters really boost your engine's horsepower and acceleration?Performance air filters are marketed as a way to increase engine power by reducing airflow restriction. This video tests that claim by comparing four different filters—including c…
Do periodical cicadas actually use prime numbers to survive their long life cycles?Periodical cicadas exhibit one of the most unusual life cycles in the biological world. This video investigates whether these insects possess an innate ability to calculate prime …
Do Photons Power the Brain?Photons trigger vision in the retina, but the brain runs on chemical energy from glucose and oxygen delivered by the blood, with only an indirect link back to sunlight through pla…
Do plants communicate when they are under attack?While plants lack the complex nervous systems found in animals, they are far from passive. This video explores how plants use chemical signals to communicate with one another, par…
Do plants possess consciousness, or are we projecting human traits onto silent botanical life?Recent scientific discoveries reveal that plants exhibit complex behaviors once thought exclusive to animals. They possess sensory capabilities, retain memories, and engage in sop…
Do plants possess the ability to count?While it sounds absurd, some researchers investigate whether certain flora can perform basic arithmetic. This video explores the scientific debate surrounding the cognitive capabi…
Do plants use electrical signals to communicate and count?Neuroscientist Greg Gage uses brain-study equipment to reveal the hidden electrical lives of plants. Watch how he demonstrates movement and information transfer in the Mimosa pudi…
Do prisoners lose their moral authority to participate in democracy?The debate over prisoner rights often centers on a perceived loss of moral authority. If a crime is serious enough to warrant imprisonment, should it also disqualify a person from…
Do psychedelic drugs make nonhuman primates hallucinate?Researchers use nonhuman primates to bridge the gap between rodent studies and human experience. While these species show characteristic behavioral changes and develop tolerance t…
Do pumps actually create pressure, or are they just responsible for flow?A common engineering myth suggests that pumps only generate flow, while pressure is merely a byproduct of resistance. This video examines the mechanics of centrifugal and positive…
Do quantum particles take every possible path between two points?Quantum mechanics suggests that unmeasured properties are not merely uncertain, but fundamentally undefined. This video explores Richard Feynman's path integral formulation, a mat…
Do rotary engines use VTEC to manage their airflow?This video explores how Wankel engines utilize variable induction systems to balance low-end efficiency with high-RPM power, specifically examining the mechanisms used in Mazda's …- Do saunas actually improve your health or just make you sweat?For thousands of years, cultures worldwide have used extreme heat for therapy. This video examines the physiological effects of saunas and investigates what modern science current…
Do sea captains actually possess the legal power to marry couples?Pop culture frequently depicts sea captains in dapper uniforms performing weddings on their ships. This video investigates whether these maritime ceremonies carry any real legal w…
Do sequels truly improve upon the original, or are they held back by legacy?This lecture from the 2010 MIT course CMS.608 Game Design examines the dual nature of sequels. While they offer opportunities to refine mechanics and engage a loyal audience, they…
Do sharks actually perish if they cease their constant forward motion?Many believe sharks must swim indefinitely to survive, but the reality of their biology and sleep patterns is more nuanced. This video examines the mechanics behind shark respirat…
Do sharks possess the ability to grow an unlimited number of teeth?Sharks are equipped with frighteningly efficient hunting mechanisms, from electrical field detection to razor-sharp teeth. This video investigates whether their ability to rapidly…
Do sharks prioritize human blood over fish blood in the wild?Mark Rober conducts a controlled experiment to determine if sharks exhibit a specific preference for human blood compared to fish blood. This test explores the sensory mechanics o…
Do social groups make predators smarter? Testing the intelligence of lions and hyenas.Kevin Richardson joins animal behavior experts to study the cognitive abilities of lions and spotted hyenas. By placing these apex predators in a unique field laboratory, research…
Do some languages naturally move faster than others in human speech?It is not just your imagination that some speakers seem to talk at breakneck speeds. Research suggests that certain languages are indeed spoken more rapidly than others, and the r…
Do specific religious beliefs actually dictate the global birth rate of human populations?Hans Rosling examines whether religious affiliation influences fertility rates. By mapping historical data across different faiths, he challenges common assumptions about how reli…
Do squirrels get frustrated? A new study suggests they might have an evolutionary motive.We often see ourselves in squirrels, but do they share our capacity for frustration? Animal behaviorist Mikel Delgado tested this by training fox squirrels to expect walnuts in a …
Do stars consume their own planets, and where are our Sun's siblings?This episode of Space Time examines the phenomenon of stars devouring planetary systems. It explores how stars originate in massive stellar nurseries and questions the current whe…
Do stock splits really drive outsized returns for investors in major companies?Investors often speculate that upcoming stock splits from large corporations serve as a catalyst for significant gains. This analysis examines whether that expectation holds up un…
Do the Darwin Awards actually track human evolution or just celebrate spectacular human stupidity?The Darwin Awards honor individuals who supposedly improve the human gene pool by removing themselves through extraordinarily idiotic actions. While these stories serve as dark co…
Do the Dutch possess an unmatched mastery over global flood defense systems?This video examines the sophisticated infrastructure behind the Netherlands' renowned water management systems. It explores whether their historical and modern engineering achieve…
Do the laws of physics leave any room for human free will?Physicists often venture into the philosophical debate surrounding consciousness and free will. This episode examines whether our understanding of a deterministic universe can coe…
Do the leg positions of equestrian statues actually reveal how a rider died?A popular myth suggests you can decode a soldier's fate by looking at a horse's hooves. This video examines the truth behind these legendary rules of sculpture.
Do the ravens of the Tower of London truly protect the British Crown?Legend claims that if the Tower of London's ravens vanish, the monarchy will collapse. While this superstition is a cornerstone of British folklore, historians suggest the traditi…
Do the Reggay named Jamaica’s slow-downbeat sound in 1968Reggae rose in late-1960s Jamaica from mento, ska, and rocksteady, then travelled with the diaspora. Toots and the Maytals’ 1968 single Do the Reggay first put the word on a hit. …- Do the Talmud's cryptic references to Yeshu actually describe the historical Jesus of Nazareth?For centuries, scholars have debated whether the Talmud contains genuine historical accounts of Jesus or merely polemical parodies. While some see these passages as early anti-Chr…
Do the traditional rules for pairing red wine with steak actually hold up?You have likely heard the conventional wisdom about matching specific wines with certain foods. But how much of this is based on genuine science? This video examines the chemistry…
Do the world's largest investment managers actually want to control the companies they own?Investment managers hold trillions in assets, yet their influence over corporate management varies wildly. While some firms aggressively push for change, industry giants like Blac…
Do the world's most extreme economic theories actually exist in practice?Explore the fundamental tension between communal distribution and the uninhibited free market. This video examines the economic arguments for and against communism and laissez-fai…
Do these famous American restaurants serve more than just food to their patrons?Explore the paranormal lore behind some of America's most famous historic dining establishments. This video investigates the stories of the disembodied spirits said to linger in t…- Do these popular life hacks actually work in reality?In this episode of Mental Floss, John puts thirty common life hacks to the test. Watch as he investigates which shortcuts are genuinely useful and which are merely clever-looking …
Do Three Giant Asset Managers Truly Control Global Finance?The narrative that a handful of massive asset managers, like Blackrock and Vanguard, secretly orchestrate global events is persistent online. However, examining the actual structu…- Do trees actually poop and pee?While the concept sounds absurd, all living things excrete waste. This video explores the biological reality behind the question of whether trees engage in similar processes to an…
Do trees really talk through a 'wood wide web'?Fungi weave through forest soil and link to tree roots, trading nutrients for sugar. Popular books describe trees using this network to feed their young and warn neighbours. A 202…
Do turtles actually breathe through their bums? A look at cloacal respiration.This video explores the biological function of the cloaca in turtles. Featuring insights from Dr. Ashwini Mohan, it investigates the reality behind the common question of whether …- Do Viruses Meet the Criteria to Be Called 'Alive'?Viruses exhibit traits like evolution and the ability to be killed by the immune system, yet they lack fundamental components of life. Scientists struggle to categorize these agen…
Do voters actually choose the Prime Minister in the British political system?The media often suggests that citizens directly elect the Prime Minister, but the reality of the British electoral process is more complex. This video examines how elections funct…
Do we actually know how to make the best choices for our lives?Psychologist Sheena Iyengar explores the mechanics of decision-making, from everyday preferences like soda brands to life-altering dilemmas. Her research reveals surprising truths…
Do we actually perceive the world, or just predict it?Neuroscientist Anil Seth explores a provocative new theory of consciousness, investigating whether our brains actively construct the reality we experience through a process of con…
Do we actually understand the artificial intelligence we use every single day?Artificial intelligence is now a standard part of daily life, yet widespread confusion persists regarding what it truly is. This video explores common misconceptions about AI to h…- Do we have a moral obligation to end global poverty?This video examines the philosophical debate over how humanity should respond to extreme poverty. It contrasts two opposing ethical frameworks: one that demands universal responsi…