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[[folder:Laser usage]]
* During the takedown of a spice harvester, part of the plan seems to be that Chani has to take down their aerial support with the missile launcher, and then the Fremen can devastate the harvester with lasers. Is there any reason they didn't just use lasers to take the air support out to begin with? The lasers seem brutally efficient and long-reaching.
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** The films' grand sweeping aesthetics definitely favor wide-open stretches of sand but there are plenty of real-life instances of plant life adapted to extremely dry environments. Root-heavy plants seem to have been the main cultivated crops on Arrakis before the coming of outside planetologists like Dr. Kynes, who introduced Earth desert plants in the interest of offsetting the negative impact of spice extraction, but most flora ''and'' fauna on the northern hemisphere of Arrakis probably cleave pretty close to areas of human habitation like the sheltered sietches for the same reason humans do when they're not stillsuited up.
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** Insects, that are both mentioned and seen. Like most of the planet's fauna, they likely live under the sands. The books also state that the fremen farm root vegetables.
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[[folder:What do the mice eat?]]

*When we see a cute little mouse running in a vast sea of sand, nothing but sand, what do those mice eat? For that matter, what do the humans eat?

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[[folder:Duncan and spitting]]




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[[folder:Soldier and hunter-seeker]]




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[[folder:Strength of shields]]




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[[folder:AA guns and shields]]



** Equiping warships with energy shields, in the universe where lasers detonate shield protected target with a power of nuclear explosion, is counterproductive to say the least.

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** Equiping Equipping warships with energy shields, in the universe where lasers detonate shield protected target with a power of nuclear explosion, is counterproductive to say the least. least.

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[[folder:City shield and worms]]



** Sandworms can’t tunnel through solid rock, only open sand basins. The Shield Wall is a geological formation in the north of Arrakis that is home to most of the planet’s non-Fremen population (and a good chunk of the Fremen as well), simply because the sandworms can’t go there.
* During Paul's vision of his galactic war, there's a scene with a conquered Caladan. But why would he need to conquer it? Doesn't he as the Atreides heir still rule Caladan?

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** Sandworms can’t can't tunnel through solid rock, only open sand basins. The Shield Wall is a geological formation in the north of Arrakis that is home to most of the planet’s non-Fremen population (and a good chunk of the Fremen as well), simply because the sandworms can’t can't go there.
there.

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[[folder:Caladan conquest]]

* During Paul's vision of his galactic war, there's a scene with a conquered Caladan. But why would he need to conquer it? Doesn't he as the Atreides heir still rule Caladan?
Caladan?
** House Atreides had to give up Caladan to take Arrakis. That was the point of the trap, getting them away from their stronghold. Someone else owns Caladan now.

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[[folder:Chani and Paul timeline]]


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* During Paul's vision of his galactic war, there's a scene with a conquered Caladan. But why would he need to conquer it? Doesn't he as the Atreides heir still rule Caladan?
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** [[spoiler:It's possible that Chani and Paul may be reconciled in the future, as Paul does say to Jessica that he has 'seen' that Chani will come to understand; albeit Paul's visions sometimes don't come to pass. It would add extra weight to Paul's despair if, after having gotten back together with her after a few agonizing years apart, he then loses her forever.]]
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* In the film's ending, a certain deviation from the book's plot risks causing issues for Villeneuve's project of making a sequel based on ''Literature/DuneMessiah''. [[spoiler:In this film, Chani breaks up with Paul when he accepts to marry Princess Irulan once he seizes the imperial throne. In the book, she doesn't and remains his main concubine (basically being his official wife in all but name). Paul and Chani still being together a decade later is very important in the sequel's events. Also Paul and Chani's breakup would also completely wreck the timeline for hypothetical sequels based on later books: the protagonists of ''Literature/ChildrenOfDune'' -- the sequel of ''Dune Messiah'' -- are Paul and Chani's twin children born during the events of ''Dune Messiah'', and them not existing would prevent the events of ''Children of Dune'''s own sequels to be possible.]]

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* In the film's ending, a certain deviation from the book's plot risks causing issues for Villeneuve's project of making a sequel based on ''Literature/DuneMessiah''. [[spoiler:In this film, Chani breaks up with Paul when he accepts to marry Princess Irulan once he seizes the imperial throne. In the book, she doesn't and remains his main concubine (basically being his official wife in all but name). Paul and Chani still being together a decade later is very important in the sequel's events.events (notably, her death in childbirth is the last straw who eventually breaks Paul's mind and causes him to go in exile at the novel's end). Also Paul and Chani's breakup would also completely wreck the timeline for hypothetical sequels based on later books: the protagonists of ''Literature/ChildrenOfDune'' -- the sequel of ''Dune Messiah'' -- are Paul and Chani's twin children born during the events of ''Dune Messiah'', and them not existing would prevent the events of ''Children of Dune'''s own sequels to be possible.]]
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* In the film's ending, a certain deviation from the book's plot risks causing issues for Villeneuve's project of making a sequel based on ''Literature/DuneMessiah''. [[spoiler:In this film, Chani breaks up with Paul when he accepts to marry Princess Irulan once he seizes the imperial throne. In the book, she doesn't and remains his main concubine (basically being his official wife in all but name). Paul and Chani still being together a decade later is very important in the sequel's events. Also Paul and Chani's breakup would also completely wreck the timeline for hypothetical sequels based on later books: the protagonists of ''Literature/ChildrenOfDune'' -- the sequel of ''Dune Messiah -- are Paul and Chani's twin children born during the events of ''Dune Messiah'', and them not existing would prevent the events of its own sequels to be possible.]]

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* In the film's ending, a certain deviation from the book's plot risks causing issues for Villeneuve's project of making a sequel based on ''Literature/DuneMessiah''. [[spoiler:In this film, Chani breaks up with Paul when he accepts to marry Princess Irulan once he seizes the imperial throne. In the book, she doesn't and remains his main concubine (basically being his official wife in all but name). Paul and Chani still being together a decade later is very important in the sequel's events. Also Paul and Chani's breakup would also completely wreck the timeline for hypothetical sequels based on later books: the protagonists of ''Literature/ChildrenOfDune'' -- the sequel of ''Dune Messiah Messiah'' -- are Paul and Chani's twin children born during the events of ''Dune Messiah'', and them not existing would prevent the events of its ''Children of Dune'''s own sequels to be possible.]]
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* In the film's ending, a certain deviation from the book's plot risks causing issues for Villeneuve's project of making a sequel based on ''Literature/DuneMessiah''. [[spoiler:In this film, Chani breaks up with Paul when he accepts to marry Princess Irulan once he seizes the imperial throne. In the book, she doesn't and remains his main concubine (basically being his official wife in all but name). Paul and Chani still being together a decade later is very important in the sequel's events. Also Paul and Chani's breakup would also completely wreck the timeline for hypothetical sequels based on later books: the protagonists of ''Literature/ChildrenOfDune'' -- the sequel of ''Dune Messiah -- are Paul and Chani's twin children born during the events of ''Dune Messiah'', and them not existing would prevent the events of its own sequels to be possible.]]
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!!''Dune: Part One'':


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!!''Dune: Part Two'':
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** There are no computers or autonomous machines in the Dune universe, they are strictly religiously forbidden to the point breaking that rule would never be considered nor would anyone know how to build such a device.
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** Sandworms can’t tunnel through solid rock, only open sand basins. The Shield Wall is a geological formation in the north of Arrakis that is home to most of the planet’s non-Fremen population (and a good chunk of the Fremen as well), simply because the sandworms can’t go there.
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** It's also implied, in the novel at least, that the Harkonnen solider is a scapegoat, and Dr. Yueh was operating the hunter-seeker. In the book, the plot was to have an attempt on Paul's life that would fail but look like it was genuine, because the Atreides would expect such a thing, both putting them on their guard but in the wrong direction and lulling them into a false sense of security (that threat was dealt with, there can't be too many more). The bricked-up soldier was to make it seem like they'd caught the assassin, when they had not (because the assassin is actually TheMole, and the assassination attempt wasn't genuine).

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** It's also implied, in the novel at least, that the Harkonnen solider soldier is a scapegoat, and Dr. Yueh was operating the hunter-seeker. In the book, the plot was to have an attempt on Paul's life that would fail but look like it was genuine, because the Atreides would expect such a thing, both putting them on their guard but in the wrong direction and lulling them into a false sense of security (that threat was dealt with, there can't be too many more). The bricked-up soldier was to make it seem like they'd caught the assassin, when they had not (because the assassin is actually TheMole, and the assassination attempt wasn't genuine).
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** Equiping warships with energy shields, in the universe where lasers detonate shield protected target with a power of nuclear explosion, is counterproductive to say the least.
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** The "Shield Wall" is not an energy shield, it's the literal wall that protects the city.
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* We're told that shields attract worms and send them into a killing frenzy. We're also told that the city is shielded, and that the shield protects the city from worms. So...which is it? Do shields attract worms, or do they keep them away?
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** The unshielded ships seemed to be going significantly faster than the shielded ones - it may be that in atmosphere a ship can't power a shield above a certain speed. It would make sense to have both shielded and unshielded ships in an attack - shieldpiercing missiles/bombs HAVE to travel slow before impact to penetrate, they could probably be easily dodged by dropships moving at top speed. Mixing both slow shielded and fast non-shielded ships makes sense, as it forces the defender to have both anti-shield, and anti-fast ship defenses, and spend extra time having to identify which weapon is effective against which.
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** Maybe the projectiles are shield-driller missiles, like the shield-piercing bullets we see?
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* Related to the above - During the attack on Arrakeen city, the defenders are shown using AA guns to shoot down Harkonnen ships. How do those projectiles circumvent the shield rules, and if they can destroy ships, why doesn't anyone ever use similar weapons on people?
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** A bullet actually doesn't have much more kinetic energy than a strong punch, it's lethal because it concentrates all that force down to a tiny point. It's quite reasonable that a shield can absorb several bullet hits in a row with minimal effect, but can be overwhelmed by being hit with sufficient force and mass.
** It's also worth noting that this is a setting where all the major parties are, at least in theory, part of the same Empire. Outright war like we seen in this movie is an aberration, most fighting is done through assassins, bandits, and saboteurs. As such, the kind of brute-force weapons you need to break shields (machine guns, bombs, etc) would be rarely employed.
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** Well, the novel stated that shields weren't perfect protection, even aside from the "slow blade" weakness. It's noted that shields in the desert attract sandworms and drive them into a killing frenzy, and that no man wearing a shield has ever survived such an attack. Now, granted, sandworms are possible the most destructive thing in the setting, but clearly, somehow they're able to kill a shielded person through brute force. It just might be that none of the existing ranged weapons are capable of delivering raw kinetic energy in that range, for whatever reason.
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* Shields in the novels are implied to be impregnable to such an extent that it is a waste of effort to shoot ranged weapons at foot soldiers - conventional artillery is only used to seal troops inside caves by demolishing the entrances. The film portrays shields as much more susceptible, e.g.: a thrown sword will bounce off a shield but still force the person inside the shield back (so some kinetic energy is transferred); shields can be penetrated by slow-falling bombs in a matter of seconds; and shields can be shorted out by a single hit from a conventional projectile, as seen when Duncan steals the ornithopter. Any of these changes would mean that simply shooting at infantry would be quite effective even with the film-version shields up, as they would still be knocked of their feet or have their shields shorted out.
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** It's also implied, in the novel at least, that the Harkonnen solider is a scapegoat, and Dr. Yueh was operating the hunter-seeker. In the book, the plot was to have an attempt on Paul's life that would fail but look like it was genuine, because the Atreides would expect such a thing, both putting them on their guard but in the wrong direction and lulling them into a false sense of security (that threat was dealt with, there can't be too many more). The bricked-up soldier was to make it seem like they'd caught the assassin, when they had not (because the assassin is actually TheMole, and the assassination attempt wasn't genuine).
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** The soldier is wearing what looks like a VR headset and is entangled in wires that presumably connect to some type of controller that he used to operate the hunter-seeker. And he most likely committed suicide upon failure.
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* How did the bricked-in Harkonnen soldier operate the hunter-seeker? When he's uncovered by Hawat and the rest of the security team, there's no sign of any remote-control equipment and it looks like he's been dead for a substantial amount of time. It's entirely possible that the hunter-seeker could have been a completely autonomous drone, but the soldier explicitly *had* to be sealed in for some purpose, presumably to release it and/or burn through the wall into Paul's room.
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** Due to his short time with the Fremen he had probably not ever actually seen this kind of display, and only inferred its meaning from what he knew of the Fremen culture; he clearly sounds like he's improvising his thanks to Stilgar in order to defuse the situation.

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** Due to his short time with the Fremen he had probably not ever actually seen this kind of display, and only inferred its meaning from what he knew of the Fremen culture; he clearly sounds like he's improvising his thanks to Stilgar in order to defuse the situation.situation.
** Even if he knew of the gesture, he might not think Stilgar would use it as an opening greeting, either because he thought Stil might be a bit more savvy about potential CultureClash issues, or (more likely) knowing Stil well enough to know he's not easily impressed.
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** In spite of his short time with the Fremen he had probably not ever actually seen this kind of display, and only inferred its meaning from what he knew of the Fremen culture.

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** In spite of Due to his short time with the Fremen he had probably not ever actually seen this kind of display, and only inferred its meaning from what he knew of the Fremen culture.culture; he clearly sounds like he's improvising his thanks to Stilgar in order to defuse the situation.
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* Why did Duncan not warn Duke Leto that Stilgar may spit in front of him and that it's a sign of respect, and not an insult? This misunderstanding could've easily gotten someone killed.

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* Why did Duncan not warn Duke Leto that Stilgar may spit in front of him and that it's a sign of respect, and not an insult? This misunderstanding could've easily gotten someone killed.killed.
** In spite of his short time with the Fremen he had probably not ever actually seen this kind of display, and only inferred its meaning from what he knew of the Fremen culture.
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*Why did Duncan not warn Duke Leto that Stilgar may spit in front of him and that it's a sign of respect, and not an insult? This misunderstanding could've easily gotten someone killed.

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