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Alex Aja Explains the Importance of Using CGI Alligators in ‘Crawl’ [Interview]

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There’s one thing you won’t see a lot of in Alexandre Aja’s new man-eating alligator movie Crawl, and that’s real life alligators. Or, for that matter, an abundance of animatronics and puppets. The new thriller, starring Kaya Scodelario as a college student trapped in a house in the middle of a hurricane as it fills with water and angry alligators, relies almost entirely on CGI creatures.

In a new interview with Bloody-Disgusting, Alexandre Aja explained the importance and necessity for CGI creations over practical effects, and revealed that – although computers did a lot of the heavy lifting – there was practical work done on the set to make the illusion convincing.

“There are, I think, four or five shots that are practical, at the end,” Aja explains.

“We had a tail to do some of the movement in the water, we had a head for the head coming out. We had the jaws open when you see [Kaya Scodelario] through the teeth. That’s practical. The baby alligators are also practical.

“The rest was full CG, but it was a decision taken very early on because […] to recreate the movement, the speed, the ferocity of these beasts, there is no animatronics that can achieve that,” Aja says.

Alexandre Aja is, of course, referring to the fact that – as impressive as animatronics have become – the art form has its own limitations.

“I was not missing the animatronics for a simple reason. When you go with animatronics you’re mostly locked into a frame,” Aja says, referring to the need to shoot animatronics from specific angles, to hide the seams and the puppeteers.

“It was good when you were mixing a lot of movies with a lot of […] fast cuts,” Aja adds, but that wasn’t what he had in mind. “I wanted to be around them. I wanted to see their whole body moving towards her and closing on her. I really wanted to feel that they exist within the frame with her, and that’s something that usually animatronics doesn’t let you do because you have to restrict framing a lot.”

Still, no matter how much CGI a film like Crawl uses, for the effects to be believable it takes additional work on the set.

“I’m a big partisan of mixing technology and I was really hands-on, to be sure that we create the place for the visual effect, [so] that we could really incorporate them the best way,” Aja explains.

“So like a diver recreating the wake as it [the alligator] comes out of the water, so we’d have the real movement of the water. From the distant crawling in their spandex green suit through a cable [to] get the right movement on the ground, and on the set around. Those were very important elements,” Aja says.

You’ll get a much closer look at the alligators of Crawl when the film opens in theaters this weekend!

Kaya Scodelario stars in CRAWL from Paramount Pictures. Photo Credit: Courtesy Paramount Pictures.

William Bibbiani writes film criticism in Los Angeles, with bylines at The Wrap, Bloody Disgusting and IGN. He co-hosts three weekly podcasts: Critically Acclaimed (new movie reviews), The Two-Shot (double features of the best/worst movies ever made) and Canceled Too Soon (TV shows that lasted only one season or less). Member LAOFCS, former Movie Trivia Schmoedown World Champion, proud co-parent of two annoying cats.

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Interviews

Paul Tremblay on Fighting AI with Horror in New Novel ‘Dead But Dreaming of Electric Sheep’

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Dead But Dreaming of Electric Sheep Review - Paul Tremblay AI Horror

Paul Tremblay didn’t start his writing career believing he’d be battling machines over the sanctity of his job, but like so many writers of his generation, the battle found him. In the years since Large Language Models (LLMs) and neural networks started gaining traction as an advertised shortcut to creativity, Tremblay has been active in lawsuits to prevent the use of his works in training AI models, and he’s found that, with each new project, he has to consider the possibility that some LLM, somewhere, is going to latch on to what he’s creating. 

“Now I feel like I’m thinking about, ‘Man, how am I going to write things that would be really hard or impossible for an AI to replicate?’,” Tremblay told me, speaking by Zoom from his home in Massachusetts. “Maybe some of that is ego. I’m sure every writer thinks, ‘Oh, an AI could never write what I write.’ Yes, I’d be lying if I said that wasn’t part of the thought process.”

While that’s something Tremblay might consider with any new work at this point in his career, the Bram Stoker Award-winning author of A Head Full of Ghosts, The Cabin at the End of the World, and many other novels and short stories tackled it in a more direct way with his latest book. Inspired by Philip K. Dick, Harlan Ellison, and the quirky humor of the Coen Brothers, Dead But Dreaming of Electric Sheep is Tremblay’s attempt at a sci-fi-horror mash-up that’s both darkly funny and existentially nightmarish. It’s also, in his own words, a screed against the movement by AI companies to supplant human artists. 

I didn’t want to make it too didactic, but no, I playfully described this book as an anti-AI screed,” he said. “This book, in particular, was driven by anger and frustration, for sure. Not every book is going to be driven that way.

Despite the emotions that fueled it, Dead But Dreaming of Electric Sheep does not read like a screed. Instead, wielding offbeat humor and tech concepts that feel both lived-in and frighteningly tactile, the book lays out tandem narratives all building to the same conclusion, each of them exploring our relationship to machine learning in a different way. One of these narratives belongs to Julia, a former gaming streamer looking for a new challenge in life, who gets a call from a California tech company with an interesting offer.

Paul Tremblay in documentary series “First Word on Horror”

The company has, it seems, implanted some new technology in a brain-dead middle-aged man which will, in theory, allow them to pilot the man’s body through a rudimentary, still-developing system of controls. Julia, with her gaming background, would be the pilot, in her own way just as much a test subject as the human vegetable she’s controlling. 

Julia is a Gen Z streamer with an omnivorous pop culture appetite, inspired by Tremblay’s own adult children, who riffs on The Big Lebowski constantly and calls her strange new meat puppet “Bernie” in reference to Weekend at Bernie’s. Her wide frame of reference, and her interest in art and stories far beyond video games, is in part informed by Tremblay’s own experiences with Gen Z, and in part a response to AI companies who scrape art and culture as a means of consuming it for reference without really experiencing a story. 

“I know that one of the arguments that OpenAI and other tech companies are trying to make is like, ‘Hey, you writers, you artists, you take pop culture, you take your influences, and you create something. That’s just the same thing that the bots are doing.’ And it’s just not,” Tremblay said. “I wanted to have Julia have her outlook informed by all this pop culture, and I wanted to make that feel really human as a way to show how inhuman the AI is.”

The other side of the story belongs to “Bernie,” who’s addressed in his point-of-view chapters as “You.” In these chapters, the technology in Bernie’s body starts to flicker images through his seemingly dead brain, delivering half-remembered imagery and perspective in a nod to the “hallucinations” of an AI model groping for understanding it can never reach. These chapters in particular show off Tremblay’s flair for formalist shake-ups, and echo the kind of hyperstimulated writing that Dick and Ellison made so influential. 

“I think it was more just the general Philip K. Dick feeling of ‘The world is so strange,'” Tremblay said. “He’s a lot funnier, I think, than maybe a lot of people credit him. That’s definitely what I was thinking of when writing the book.

Bernie’s chapters embody the strangeness of Dead But Dreaming of Electric Sheep, presenting imagery that’s at times puzzling, at times eerily filmic, and always unnerving. They also mirror Julia’s own journey in fascinating ways as the odd couple – the Gen Z gamer and the middle-aged vegetable – traverse the United States, and the tech in Bernie’s body wakes up to the possibilities of using his flesh for its own purposes. It’s a compelling narrative technique, but it presented some new writing challenges for Tremblay. 

“I quickly realized I couldn’t write this book the same way I have in the past,” he said. “By that, I mean all my other novels I had written in the order in which it was presented, even things that are nonlinear, which is most of them. I knew I couldn’t do that in this book. It’s not a spoiler, but hopefully the readers figure out pretty early that the Bernie chapters are a little bit of a preview of the next chapter from Julia, what’s actually happening with Julia. It’s all refracted from him.”

Mary Roach’s Stiff

Dead But Dreaming of Electric Sheep began with a simple image, inspired by Tremblay’s reading of Mary Roach‘s book chronicling the history of our treatment of corpses, Stiff. As he read, Tremblay imagined a body sitting on an airplane, remote-controlled by someone else. At the time, it was a “silly what-if” concept, filed away in his head. Years later, when he became an author suing a tech company to keep AI from scraping his work for ideas, it started to feel frighteningly plausible, taking the “silly what-if” into the territory of a high-concept horror show about what happens when we try to exploit and commodify uniquely human aspects of consciousness. 

“It stuck with me,” Tremblay said of that what-if imagery. “And then a few years later, when I was a part of the case suing OpenAI on behalf of writers, that what-if suddenly didn’t seem as silly. The more I learned about how that corporation operates and without really any sort of ethical thought to anything, I was like, ‘Oh, I’m going to play with that. That’s actually happening.”

So, what if someone actually in favor of generative AI picks up Tremblay’s self-described “anti-AI screed?” He hopes that, at the very least, he’s made the ride enjoyable in a distinctly human way that might begin to reshape the conversation. 

“I think that was another reason why I wanted to have the humor,” Tremblay said. “If people are reading this book who aren’t on the side of like, ‘Hey, LLMs taking authors’ books is bad,’ maybe if they read something that’s cut with some humor, that maybe they’ll be more easily swayed.”

Dead But Dreaming of Electric Sheep is now in bookstores everywhere. 

Dead but Dreaming of electric sheep

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