Diagnosing the Home Alone Burglars' Injuries: A Professional Weighs In

20th Century Fox
20th Century Fox

By Lauren Hansen

Since its debut in 1990, Home Alone has become as much a part of the Christmas cinematic ritual as It's a Wonderful Life. But unlike that uplifting tale about the good of mankind, Home Alone tells a rather unsettling Christmas story of a precocious 8-year-old who, after accidentally being abandoned by his family, is forced to defend his home from two dimwitted burglars.

Kevin McCallister (Macaulay Culkin) turns his family's home into a veritable funhouse of torturous booby traps that the so-called Wet Bandits Marv (Daniel Stern) and Harry (Joe Pesci) hilariously stumble through, and the transformation of a suburban Chicago home into a relentless injury machine is nothing short of spectacular. But it does require quite a suspension of disbelief. Can a man really be hit square in the face with a steam iron and walk away unfazed? What kind of permanent physical damage would a blow torch to the head really do? To answer these questions and officially dissolve Home Alone's Hollywood magic, I spoke with my friend Dr. Ryan St. Clair of the Weill Cornell Medical College. Enjoy.

THE INJURY: BB GUN TO THE FOREHEAD

The Set-Up: Marv and Harry try to sneak into the McCallister home by sweet talking Kevin from the back door. Kevin, meanwhile, points his BB gun through the doggie door and directly at Harry's groin—and shoots. When Marv goes to investigate the source of Harry's pain, he is met by the same BB gun, which is fired at extremely close range to his forehead.

The Doctor's Diagnosis: "Classic air-powered projectile weapons typically have muzzle velocities of 350 feet per second or less. A BB fired at close range from such a weapon could break the skin, but will not penetrate the skull, and is unlikely to penetrate Harry's scrotum, especially through fabric."

THE INJURY: IRON TO THE FACE

The Set-Up: Thwarted by the BB gun at the back door, Marv runs around to the basement stairwell—which Kevin has deliberately iced. Once he has stumbled his way down into the dark basement, Marv grabs for what he thinks is the light bulb cord. It's actually a rope attached to a steam iron that is propped up on the laundry chute door. The heavy iron comes plummeting down and smacks Marv in the face.

The Doctor's Diagnosis: "Let's estimate the distance from the first floor to the basement at 15 feet, and assume the steam iron weighs 4 pounds. And note that the iron strikes Marv squarely in the mid-face. This is a serious impact, with enough force to fracture the bones surrounding the eyes. This is also known as a 'blowout fracture,' and can lead to serious disfigurement and debilitating double vision if not repaired properly."

THE INJURY: HANDLING A BURNING-HOT DOORKNOB

The Set-Up: While Marv is getting an iron to the face, Harry tries to enter the home through the front door. The first attempt doesn't go well, as the stocky burglar slips on the icy steps and falls to the ground, landing with a thud on his back. Easing up a second time with the help of the railing, Harry makes it to the front door, reaches for the doorknob—which we see is literally burning red—and grasps the searing handle, the pain of which forces him once again down the icy steps.

The Doctor's Diagnosis: "If this doorknob is glowing visibly red in the dark, it has been heated to about 751 degrees Fahrenheit, and Harry gives it a nice, strong, one- to two-second grip. By comparison, one second of contact with 155 degree water is enough to cause third degree burns. The temperature of that doorknob is not quite hot enough to cause Harry's hand to burst into flames, but it is not that far off ... Assuming Harry doesn't lose the hand completely, he will almost certainly have other serious complications, including a high risk for infection and 'contracture' in which resulting scar tissue seriously limits the flexibility and movement of the hand, rendering it less than 100 percent useful. Kevin has moved from 'defending his house' into sheer malice, in my opinion."

THE INJURY: A BLOWTORCH TO THE SCALP

The Set-Up: Unable to get through the front door, Harry returns to the back. He kicks his foot through the doggy door to disarm a potential BB gun threat, delicately taps at the doorknob to test its temperature, and, finding it cool, opens the back door—only to unknowingly arm a blowtorch that fires at the top of his head.

The Doctor's Diagnosis: "Harry has an interesting reaction to having a lit blowtorch aimed directly at his scalp. Rather than remove himself from danger, he keeps the top of his skull directly in the line of fire for about seven seconds. What was likely a simple second-degree skin burn is now a full thickness burn likely to cause necrosis of the calavarium (skull bone)." That means the skin and bone tissue on Harry's skull will be so damaged and rotted that his skull bone is essentially dying and will likely require a transplant.

THE INJURY: WALKING BAREFOOT ON CHRISTMAS TREE ORNAMENTS

The Set-Up: After surviving the iron to the face, getting his shoes and socks peeled off by tar, and stepping onto a 3-inch nail, Marv abandons the basement entrance and enters the home through a conveniently opened window. Without looking down, however, and still barefoot, Marv jumps in, putting his full weight on a dozen pointy ornaments littered on the wood floor.

The Doctor's Diagnosis: "Walking on ornaments seems pretty insignificant compared to everything else we've seen so far. If I was Marv, I'd be more concerned about my facial fractures."

THE INJURY: PAINT CAN TO THE FACE

The Set-Up: Although severely injured, both the burglars are finally inside the house, and have forgone their looting plan for one of revenge. Hearing the taunts of Kevin's pre-pubescent voice, they scamper into the foyer only to slip dramatically on scores of Micro Machines, landing, once again, on their backs. Kevin cruelly mocks them from the top step: "You guys give up yet? Or are you thirsty for more?" Marv and Harry scramble up the staircase, where they are met by a speeding paint can attached to a rope. Harry manages to duck and evade the first hit, but Marv gets a paint can square in the face. Harry continues up the stairs but is hit by a second paint can. Both burglars end up back on the ground floor.

The Doctor's Diagnosis: "Assuming the paint can is full (roughly 10 pounds) and the rope is 10 feet long, Marv and Harry each take a roughly 2 kilo-newton hit to the face. That is easily enough to fracture multiple facial bones, and is probably going to knock you out cold. Also, I wouldn't expect either of the Wet Bandits to walk away from this with all of their teeth."

THE INJURY: SHOVEL TO THE BACK OF THE HEAD

The Set-Up: Kevin eventually lures the Wet Bandits through his house of injurious horrors, across the street, and into a neighbor's house. But Marv and Harry have clued into the fact that following the little tyke has provided them nothing but pain. They enter the neighbor's house their own way and meet little Kevin at the top of the basement steps. They hang him by his sweater from a hook on the back of a door and outline all the ways in which they will pay him back for the pain he caused, beginning with biting "every one of these little fingers, one at a time." Just before Harry can take the first bite, Kevin's elderly neighbor saves the day, coming up behind the burglars and hitting each one over head with his shovel, knocking them out cold.

The Doctor's Diagnosis: "Seriously? At this point, Marv and Harry have both suffered potentially crippling hand and foot injuries. Harry has proved to be nearly impervious to burns, and both managed to retain consciousness after taking a flying paint can straight to the face. Suddenly, a frail elderly man appears and weakly slaps them in turn with a flimsy aluminum Home Depot snow shovel. And, somehow, this is too much for them, and they collapse. This movie was way more believable when I was 8."

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Fact-Checking 13 Plot Points in All Is True, Kenneth Branagh’s Shakespeare Biopic

Kenneth Branagh as William Shakespeare in All Is True (2019).
Kenneth Branagh as William Shakespeare in All Is True (2019).
Robert Youngson, Courtesy of Sony Pictures Classics

After being the face of Shakespeare film adaptations to a whole generation in films like Henry V (1989), Much Ado About Nothing (1993), Othello (1995), Hamlet (1996), and Love's Labour's Lost (2000), Kenneth Branagh has stepped into the shoes of the Bard himself. The British actor plays William Shakespeare in the new movie All Is True, which the five-time Oscar nominee also directed.

The film, which began rolling out in U.S. theaters on May 10, functions as a sequel of sorts to Shakespeare in Love. Call this one Shakespeare in Retirement. It depicts the Bard in the final few years of his life, which historians believe he mostly spent in Stratford-upon-Avon. Before his death in 1616, Shakespeare reunited with the wife and children he’d spent so much time away from while working in London.

All Is True takes its name from an alternate title used during Shakespeare’s lifetime for his play Henry VIII. The film frequently winks at its title, exploring the role of truth—or lack thereof—in the life of Branagh’s Will.

Spotty historical records leave many details about Shakespeare’s life in the realm of uncertainty, so filmmakers depicting the playwright must make use of broad artistic license to fill in the blanks. Mental Floss spoke with Harvard University professor and Will in the World: How Shakespeare Became Shakespeare author Stephen Greenblatt to fact-check All Is True. It turns out that the film’s depiction of Shakespeare is a mix of truth, presumed truth, and pure imagination.

1. Partially true: Shakespeare retired to Stratford-upon-Avon after the Globe burned down.

All Is True opens with the striking image of Will’s silhouette in front of a massive, crackling fire that destroys his prized playhouse. A title card tells viewers that at a performance of Shakespeare’s Life of Henry VIII (a.k.a. All Is True) at the Globe on June 29, 1613, during Act 1 Scene 4, a prop cannon misfired, starting the blaze. The next title card states, “The Globe Theatre burnt entirely to the ground. William Shakespeare never wrote another play.”

A prop cannon likely did misfire, and the resulting fire did destroy the Globe; while there were fortunately no deaths or serious injuries as a result, the fire delivered a serious financial blow to Shakespeare and other shareholders in the King's Men, the company of actors who performed at the Globe. But "never wrote another play" is a stretch. “The movie suggests he rode out of London, as it were, in the wake of the fire,” Greenblatt says. “But actually, it’s widely thought that he retired to Stratford before but he continued to write for the theater.”

The Tempest, for example, was likely the last play Shakespeare wrote solo, without a collaborator, and some scholars theorize he wrote it at home in Stratford-upon-Avon, not in London. Academics are divided as to which play was the final play Shakespeare ever wrote, but the general consensus is that it was either Henry VIII or The Two Noble Kinsmen, both collaborations with John Fletcher, which were possibly written during return trips to London.

2. True: Shakespeare’s daughter was accused of adultery.

Left to right: Jack Colgrave Hirst as Tom Quiney, Kathryn Wilder as Judith Shakespeare, Kenneth Branagh as William Shakespeare, Judi Dench as Anne Hathaway, Clara Ducz- mal as Elizabeth Hall, Lydia Wilson as Susanna Hall
Left to right: Jack Colgrave Hirst as Tom Quiney, Kathryn Wilder as Judith Shakespeare, Kenneth Branagh as William Shakespeare, Judi Dench as Anne Hathaway, Clara Duczmal as Elizabeth Hall, and Lydia Wilson as Susanna Hall in All Is True (2019).
Robert Youngson, Courtesy of Sony Pictures Classics

The film depicts a man named John Lane accusing Shakespeare’s eldest child, Susanna Hall, of adultery. That really happened, and the real-life Susanna Hall sued Lane in 1613 for slanderously saying that she had cheated on her husband with local man Ralph Smith.

As for whether Susanna Hall really did have an extramarital relationship with these men, that’s not known for sure, and the film leaves this somewhat up to viewer interpretation. But her real-life slander case did succeed in getting Lane excommunicated.

3. Likely true: Shakespeare had no schooling beyond age 14.

When a fanboy approaches Will with some eager questions, he says, “They say you left school at 14.” The line may be a bit misleading: Shakespeare did not quit school as a student would today if he "left school" at age 14. But it is true that boys in Shakespeare’s time completed grammar school at around age 14. They then could begin apprenticeships. Shakespeare’s schooling would have been intense, though: He would have been in lessons from 6 a.m. to as late at 6 p.m. six days a week, 12 months a year (getting an extra hour to sleep in only during the winter, when school started at 7 a.m. in the dark and cold months).

As Greenblatt wrote in Will in the World, “the instruction was not gentle: rote memorization, relentless drills, endless repetition, daily analysis of texts, elaborate exercises in imitation and rhetorical variation, all backed up by the threat of violence.”

No surviving records confirm that Shakespeare attended the school in Stratford-upon-Avon, but most scholars safely assume that he did. The grammar school there was free and accessible to all boys in the area, the exception being the children of the very poor, since they had to begin working at a young age.

Regarding the fanboy moment in the film, Greenblatt says, “The implication of that moment was precisely to remind us that [Shakespeare] didn’t go to university, as far as we know. I’m sure he didn’t. He would have bragged about it at some point" (as many of his contemporaries did).

4. Likely true: Susanna Hall was literate, while Shakespeare’s wife and younger daughter were not.

While boys received a formal education in Elizabethan and Jacobean England, girls did not. The film depicts Susanna as skillful at reading, unlike Will’s younger daughter, Judith, or his wife, Anne.

This is likely true: Greenblatt says that “the general sense is that Susanna was literate and that Judith and Anne were not,” though this is another area of Shakespeare’s family history that scholars cannot know for certain.

“This is a trickier matter than it looks,” Greenblatt says, “because lots of people in this period, including Shakespeare’s father, clearly knew how to read, but didn’t know how to write. This would be particularly the case for many women but not exclusively women in the period—that writing is a different skill from reading and that quite a few people were able to read.”

5. True: Shortly after his son’s death, Shakespeare wrote The Merry Wives of Windsor.

Judi Dench as Anne Hathaway and Kenneth Branagh as William Shakespeare in 'All Is True'
Judi Dench as Anne Hathaway and Kenneth Branagh as William Shakespeare in All Is True (2019).
Robert Youngson, Courtesy of Sony Pictures Classics

When Will insists that he did mourn Hamnet, his only son, who died in 1596 at age 11, Anne bites back, “You mourn him now. At the time you wrote Merry Wives of Windsor.”

It’s a gut-punch from Anne not just because Merry Wives (featuring the ever-entertaining character Falstaff) is a raucous comedy but also because it was, in the most cynical view, a cash grab. Shakespeare likely wrote Merry Wives after the Falstaff-featuring Henry IV Part 1 but before moving onto the grimmer Henry IV Part 2, “to tap an unexpected new market phenomenon,” scholars Martin Wiggins and Catherine Richardson wrote in British Drama, 1533-1642: A Catalogue regarding the "humours comedy," which debuted to immediate popularity in May 1597.

There is another way to interpret this: Both parts of Henry IV deal with a troubled father-son relationship, and the conclusion of Part 2 depicts a son taking up the mantle of his deceased father. Perhaps Prince Hal and King Henry hit too close to home for Will (who in this film hopes his son will follow in his poetic footsteps), and a lighthearted comedy is what he needed.

6. Very unlikely: The Earl of Southampton visited Shakespeare in Stratford-upon-Avon.

Henry Wriothesley, 3rd Earl of Southampton, was one of Shakespeare’s patrons, and Shakespeare included a lengthy dedication to Southampton in his poem The Rape of Lucrece. Despite that affiliation, the idea that Southampton (played by Ian McKellen, yet another acclaimed Shakespearean actor) would have visited Shakespeare’s home in Stratford is just “a piece of imagination,” according to Greenblatt. He points out that “it’s difficult to imagine any longer the social abyss” between an earl and someone like Shakespeare but explains, “The difference in social class is so extreme that the idea that the Earl would trot by on his horse to visit Shakespeare at his house is wildly unlikely.”

It is more likely that fellow playwright Ben Jonson would have visited Shakespeare, as he does later in the film.

7. Uncertain: Shakespeare’s sonnets were published “illegally and without [his] consent”

This is what Will reminds the Earl of Southampton of in the film. Regarding that term illegally, it’s worth first noting that though copyright law as we know it did not exist in 16th century England, “there definitely were legal controls over publication,” Greenblatt says.

“This is a notoriously complicated matter—the publication of the sonnets,” he explains. “It is still very much open to question. It’s not a settled matter as to whether Shakespeare did or did not have anything to do with the publication of those sonnets.”

8. Uncertain: Shakespeare wrote some of his sonnets for and about the Earl of Southampton.

Ian McKellen as Henry Wriothesley in 'All is True'
Ian McKellen as Henry Wriothesley in All is True (2019).
Robert Youngson, Courtesy of Sony Pictures Classics

One juicy debate about Shakespeare that endures is the question of who (if anyone) is the subject of his sonnets. Some speculate that his poems that describe a fair youth refer to the Earl of Southampton.

The film imagines a slightly more complicated—and perhaps more believable—situation than the idea that Southampton and Shakespeare had a fling: Will harbors feelings for Southampton, unrequited by the Earl, who reminds Will, “As a man, it is not your place to love me.”

“There is no way of achieving any certainty,” Greenblatt wrote in Will in the World regarding whether the sonnets were written as love tokens for anyone in particular. “After generations of feverish research, no one has been able to offer more than guesses, careful or wild.”

9. True: 3000 attendees could fit into the Globe for one performance.

In an elaborate, impressive clapback directed at Thomas Lucy, a local politician who repeatedly insults Will, the celebrated playwright cites his many responsibilities in London, then says he somehow “found time to write down the pretty thoughts you mentioned.”

It’s true that Shakespeare was both a businessman and poet. His status as a shareholder in the Lord Chamberlain’s Men (later the King’s Men) was actually unprecedented: “No other English literary playwright had ever held such a position,” Oxford professor Bart van Es wrote in Shakespeare in Company, adding that becoming part owner of the Globe, “the most impressive venue in London … placed him in a category entirely of his own.”

Among the accomplishments Will lists for Lucy is filling the Globe with “3000 paying customers per afternoon.”

“That is the upper end of the size of those public theaters, as far as we now know from archaeological evidence,” Greenblatt says. “Three thousand is at the high end, but yes. Whether they actually got 3000 people every afternoon is another question.”

Meanwhile, the reconstruction of the Globe that opened in London in 1997 has a capacity of about half that. Its dimensions are the same as the Globe of Shakespeare’s day but modern fire codes don’t allow playgoers to be packed in quite so tightly.

10. True: Shakespeare wrote Thomas Quiney out of his will.

The film depicts the retired playwright adding his son-in-law-to-be, Thomas Quiney, to his will in anticipation of Quiney's marriage to Will's youngest daughter, Judith. A couple of months later, Shakespeare amends his will again after it’s revealed that Quiney fathered a child by another woman before marrying Judith.

This may have really happened. Shakespeare summoned his lawyer in January 1616 to write Quiney into the will. Then in March, a month after his wedding, Quiney confessed in the vicar’s court to being responsible for the pregnancy of unmarried Stratford woman Margaret Wheeler, who had just died in childbirth (along with the child). Shakespeare then met again with his lawyer to strike out Quiney’s name and insert Judith’s name instead. However, some historians dispute that Shakespeare made this change as a result of the scandal; they instead suggest that it was due to practical concerns about Judith’s financial future.

All Is True reverses scholars’s common assumption that Shakespeare had a better relationship with Susanna’s husband, physician John Hall, than with Judith’s. It depicts Will’s removal of Quiney from his will as a reluctant necessity. “What the movie does is suggest [that John] Hall is an obnoxious, Puritan prig and that Thomas Quiney is actually a very nice fellow,” Greenblatt says.

One aspect of Shakespeare’s relationship with Hall that the film leaves out entirely is scholars’ assumption that Hall would have tended to the playwright during any sickness that led to his death. The cause of Shakespeare’s death is unknown, however, and Hall’s surviving casebooks date back only to 1617, the year after Shakespeare’s death.

11. Unlikely: Shakespeare’s family recited his verse at his funeral.

At what appears to be Will’s funeral, Anne, Judith, and Susanna (all with varying levels of literacy) read aloud the words of a dirge sung for the supposedly dead Imogen in Cymbeline. “Fear no more the heat o’ th’ sun,” they quote, “Thou thy worldly task hast done … All lovers young, all lovers must / Consign to thee and come to dust.”

The words are evocative of Scripture. (“Be not afraid” / “Have no fear” is said to be the most repeated phrase in both the Old Testament and the New Testament—and of course there’s the Genesis passage often read at funerals: “For dust thou art, and unto dust shalt thou return.”) Greenblatt says it is “very unlikely” that verse not from the Bible would have been recited at a funeral at the time of Shakespeare’s death, adding, “but I found that moment quite touching.”

SPOILER WARNING: The remainder of this article includes spoilers about some major twists in All Is True.

12. Uncertain: Shakespeare’s offspring wrote poetry.

Kathryn Wilder as Judith Shakespeare, Kenneth Branagh as William Shakespeare in All is True (2019)
Kathryn Wilder as Judith Shakespeare and Kenneth Branagh as William Shakespeare in All Is True (2019).
Robert Youngson, Courtesy of Sony Pictures Classics

In All Is True, when Will voices grief for his son who had died 17 years prior, he often references Hamnet’s apparent talent as a poet. “He showed such promise, Anne,” Will cries.

Branagh’s film imagines that Hamnet wrote poems full of wit and mischief. Then Judith drops the revelation that she actually crafted the poems, dictating them to her twin brother, who knew how to write. All Is True thus displaces the controversial authorship question from Shakespeare to his children.

“There’s no historical trace of any of this,” Greenblatt says. “That is just an invention.”

13. Uncertain: Hamnet Shakespeare died of the plague.

The other revelation that stuns Will in All Is True is about Hamnet’s death. Will looks at the record noting young Hamnet’s death and becomes suspicious about whether his only son really died of the plague. He confronts Anne and Judith, pointing out the small number of deaths in Stratford in the summer of 1596, saying that the plague strikes with “a scythe, not a dagger.” At this point, Judith confesses that her twin took his own life after she threatened to tell their father about the true author of the poems. She then tearfully recalls Hamnet, who did not know how to swim, stepping into a pond and drowning.

Though the historical record doesn't supply a cause of death for Hamnet, many historians assume he died of the bubonic plague. For the film's revelation about Hamnet’s suicide, which Greenblatt deems as another imaginative invention, Branagh and screenwriter Ben Elton seem to have taken inspiration from the real parish register recording burials at Holy Trinity Church in Stratford, which lists no more than two dozen burials between June and September 1596. Meanwhile, a plague epidemic hit Shakespeare’s hometown shortly after the poet’s birth in 1564 and lasted about six months, killing more than 200 people in Stratford, which was about a sixth of the population.

As Greenblatt points out, the storyline about Judith’s poems and Hamnet’s death serves as a commentary on Virginia Woolf’s compelling essay, “Shakespeare’s Sister,” which appears in A Room of One’s Own, published in 1929. The essay imagines a tragic story for Shakespeare’s fictional sister who is as gifted as her successful brother but is not permitted to go to school and whose parents scold her each time she picks up a book. “She was as adventurous, as imaginative, as agog to see the world as he was,” Woolf wrote.

Greenblatt observes that the central theme of All Is True seems to be “the tragic cost of not having full access to literacy if you were a woman.” He notes, though, that in Elizabethan and Jacobean England, “there were actually quite a few [literate] women, and the work of the last generation, particularly feminist scholars, have recovered a much larger field than Virginia Woolf could have understood or than the movie suggests, of women who were reading and writing in the period.”

Kenneth Branagh’s All Is True is in theaters now.

Could Game of Thrones's Dragons Really Fly? We Asked Some Experts

HBO
HBO

Game of Thrones is a show that requires a serious suspension of disbelief. It exists in a universe where the dead can rise from their graves, humans can see through the eyes of animals, anyone can travel between Dragonstone and Eastwatch at or near the speed of light, and Jon Snow can hold an unbroken frown for seven straight seasons.

Still, as we anticipate the premiere of Game of Thrones's eighth and final season on April 14—and as we remember cowering each time Drogon hovered in midair to pour a throatful of flame over one of Daenerys Targaryen’s enemies in last season's big-budget battles—we started to wonder: Could a beast that big really maneuver through the air like that? Fortunately, two scientists who have dedicated their lives to studying flying creatures agreed to clear that up for us.

Kevin McGowan, a Cornell ornithologist who specializes in crows, says there’s one major problem with dragon flight: physics. “They’re just so damn big,” he says. “Way too big to ever get off the ground.”

For comparison, there's the albatross, which weighs around 25 pounds and needs a 10-foot wingspan in order to heave itself into the air. And birds don’t scale up easily. McGowan says that as a bird gets heavier, its wingspan has to grow exponentially to keep up: “If you need a 10 foot wingspan for a 25-pound bird, what would you need for a 2000-pound dragon?” (Last season, one eagle-eyed engineer estimated that Drogon weighed around three tons and flew with a wingspan under 60 feet—and the dragons are even bigger now.)

In the real world, bird species generally stay small to avoid having to grow their wings exponentially. Those that do grow large wings, like the albatross, can travel long distances—but pay the price in maneuverability. Birds with smaller wings can maneuver in tighter spaces, but have to expend much more energy to stay aloft. “Birds make a lot of compromises to fly,” McGowan says, “and dragons just aren’t doing that.”

Still, there is some hope for letting our dragon-sized fantasies take flight. Michael Habib, a paleontologist and assistant professor of clinical integrative anatomical sciences at the University of Southern California's Keck School of Medicine, studies the flight mechanics of extinct animals, including giant pterosaurs once thought to be too big to get off the ground. He also works with film studios like Disney, Marvel, and Lucasfilm to design believable flying monsters like griffins, hippogriffs, and pegasi. There are three tricks, he says, for plausibly scaling up fantasy flying creatures.

First, you want to give them the right wing type. Like modern day bats, pterosaurs—which lived from 228 to 66 million years ago—had membrane wings, made of skin stretched over a series of elongated fingers. These are good for slow, maneuverable flight, and they don’t have to be as large compared to the body as a bird’s feather wings. Habib tells Mental Floss that a dragon with a good pair of wings would be able to sustain flight easily once it was in the air—but it could only get there “if it came with a catapult for takeoff.”

Second, a dragon needs to have the right skeletal structure. Their bones should be strong enough to withstand the massive mechanical forces involved in flight without getting too heavy. Hollow bones are best; they're actually stronger than a very dense bone with a similar mass. Habib explains that’s because the bone’s ability to withstand the strain of flight depends on its diameter—the wider it is, the more force it can take. A hollow, air-filled bone can be much wider than a dense bone full of marrow, and it will still weigh less than the dense bone.

Third, and most importantly, a dragon needs to have as much power available for takeoff as possible. Habib says that almost every animal that takes flight, from birds to flying squirrels to winged snakes, gets into the air by jumping, not flapping its wings.

“What birds get stuck on is they only have two hind limbs available for jumping power,” Habib says. “Bats do better—and pterosaurs did, too—because they walk on their wings and they can jump off of all four limbs.”

That makes a big difference, especially because most of a bird’s strength is in its wings. While birds take off with less than half their bodies’ muscle power, bats and pterosaurs launch themselves with everything they’ve got. That’s what allowed the largest pterosaurs to grow into 550-pound behemoths, while the heaviest-ever flying bird—the extinct Argentavis magnificens—maxed out around 150 pounds.

The dragons in Game of Thrones do have membrane wings, and they could conceivably have hollow bones. Back in season three, WIRED reported that the show’s animators based the dragons on a cross between an eagle and a bat. (Their strenuous, flappy hovering certainly takes after fruit bats.) Although the dragons walk around on their wings like bats, they don’t seem to jump off of them during takeoff. Throughout the series, we see them dive from cliffs and glide into flight, leap off their hind legs after a running start, and sometimes just flap their wings and leave the ground.

Habib says even if a dragon followed all of his specifications, it could only grow up to about 1000 pounds without grounding itself—not several tons, like Daenerys’s children.

“They’re probably beyond the flight limit for any anatomy,” Habib concedes, “unless they’re secretly made out of carbon fiber and titanium.”

“Maybe they’re full of hot air,” suggests McGowan, “or maybe it’s just magic.”

And what would happen if a dragon got a hole in one of its membrane wings, like Viserion displays after rising from the dead in the finale of season seven? Could it still fly? "The short answer is, probably a bit, but not as well as normal," Habib says.

Bats can fly with similarly damaged wings thanks to the way wings move through air. We tend to think of them as paddles pushing the air, but wings actually pull air. Like any other fluid, air has a certain amount of intrinsic stickiness to it, so air sticks to other air. "As the wing is pulling on the air, it's flowing over and around the wing, and it will skip over the air within the wing's small gaps and imperfections just as water will jump over the holes in a storm grate," Habib says. "Obviously, the more holes you put in the wing, the more inefficient it becomes, but it will still work up to a point. If there are too many holes, it will fail."

To McGowan, though, how the dragons fly doesn't really matter: “I think all day. When I go home, I don’t want to think anymore. I can just say it’s magic. I don’t care.”

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