Before the alien attacks Morgan in the basement, only Merrill and Graham have flashlights. Graham drops his flashlight as he goes to grab Morgan. Bo picks it up and shines it on Graham and Morgan, who are on the other side of the room; he then goes and sits with Merrill, putting both flashlights on the same side of the room. However, when Merrill says they should save the flashlights, one light turns off on either side of the room. [No. The flashlights are not only on the same side of the room, one is directly above the other. Merril turns off his flashlight first, then Bo, both on the left side of the screen.]

The dad walks into a room with glasses of water all over the place (this is after the night when the alien was on the roof) and his daughter is watching a cartoon, called "Dexter's laboratory". In the episode she's watching a scene is missing, in between the part where the father hits the bug off the ladies' hair and the part where the character says "do it up". [Content is often edited when episodes are rerun in syndication to allow for more commercial breaks.]

In the scene where Graham hears Bo scream, he uses his right hand to open her bedroom door. In the shot from inside the room, his left arm is outstretched as if he had opened the door with that hand. [We don't actually see his left hand holding the doorknob. Being right-handed, it makes sense for him to use his right hand to open the door. But since the door swings leftward, he would use his left arm to nudge it further open.]

When the alien is killed in the end, we see his point-of-view as the glass of water tips and spills on his face, and you can blatantly tell that is a prop. Firstly, it doesn't spill as it tips, it only starts to spill after it has completly fallen over, which doesn't happen when a glass tips (try it yourself). And secondly, you can see it continue to pour out water for at least five or six seconds, meaning that more water has spilled than the glass could even carry. [We cannot see how full the glass is, so cannot say how far it would have to tip before the water poured out. Also, the filming effect showed not necessarily more water than it should, but slower than it should.]

When everyone is in the basement, Merrill breaks a light bulb while pulling an ax off a shelf. If you watch frame-by-frame, you will notice it breaks twice. [The rules of this site are very clear.if it requires slo-mo or freeze-frame it is NOT A MISTAKE.]

It is hinted that the aliens have been visiting Earth since the 1970s for recognisance purposes. In all that time, did they never notice how much it rains on this planet? Were the aliens flying over the deserts most of the time? [The info about how long aliens have been visiting Earth comes from the book Morgan and Bo are reading. This book is highly questionable as evidence, seeing how all of the information recited from it smacks of sensationalism, and a lot of it is completely false (like wearing tin foil on your head to avoid brain scans). It is therefore not certain that the reports on earlier visitiations are true. And even granting that they MAY have been true, according to an earlier correction it is possible that it is the contamination in tap water that is toxic to aliens, so observation of rain and clouds would not have revealed this danger to them.]

Late in the film you find out that water is to aliens as strong acid is to humans. However, earlier in the film when Mel Gibson goes to investigate the corn fields with the torch, the aliens are running around in the mist filled corn fields. Correct me if I'm wrong, but isn't mist just water vapor? Seeing how bad a glass of water ate away at the alien's flesh, even the slightest bit of water such as water vapour in the lungs and on the skin should cause serious damage or at least painful irritation, especially with prolonged exposure such as a few minutes. Just imagine a human breathing acid fumes, or walking in a room filled with acid gas. [It is never stated in the movie that water is what the aliens are "allergic" to. I think perhaps Bo's habit of stating that the water is "contaminated" is a hint. Maybe it's not water, per se, but TAP water that hurts them. There are lots of chemicals in tap water that don't hurt us, but could be toxic to the aliens.]

At one point, the little girl turns up the volume on the television set, where some professor is discussing the crop circles. The television is muted, yet the sound comes on instantly when she presses the button. Furthermore, despite the fact the she has her hand on the volume button for a good few seconds, the sound level on the TV remains the same. [Not really a mistake as my TV works in exactly the same way. To turn it off mute I need to press the volume button. Also when i hold down my volume button it doesnt always turn the volume up. Sometimes there is a need to repress the button. This happens alot on older tv's or where the remote is not the original.]

At the beginning of the movie, Graham is wearing pajamas and bare feet while standing in his bathroom when he hears the screams and runs outside in a panic but when he gets to the crop circle he is wearing neatly laced up hiking shoes/boots. [It is not inconceivable that Graham took two minutes to put on his shoes before he went outside.]

Later in the movie we hear from the radio/TV that the aliens have been scared out of other countries as the inhabitants have discovered some "primitive methods" of defense. Of course its very unlikely that those countries wouldn't have mentioned the fact that it was water. Then it would only make sense to forward that information to the REST OF THE WORLD along with any newspieces. Is it that hard to say "oh by the way, you can rid yourself of any pesky aliens by using WATER.". [It's very common for news shows, especially here in the States, to bait the audience by introducing the most important and/or interesting information, then doing a commercial break: "Coming up next, what you don't know about the deadly chemicals in your own home." This is one such example. It's not extremely important to relay this information because for all intents and purposes the invasion is over - the alien ships have left and only a few wounded stragglers who should be quickly overwhelmed by recovering humans remain. The emergency broadcast about water as a weapon went out while our heroes were in the basement.]

These aliens are capable of interstellar travel, but they cannot figure out how to get out of a bathroom, with a wooden door and a simple lock? [Given their advanced technology they can travel across the stars. Without that, they're stuck with much the same physical equipment that humnas are. It would be easy enough to lock a person in a closet that has a deadbolt, even though humans are smart enough to figure out relativity.]

Ray tells Graham that he passed Graham's wife on the road 10-15 seconds before he hit her. How could he hit her if he already passed her on the road? What, did he do a U-turn in order to hit her? [Ray actually says that he just fell asleep for 10-15 seconds. During that time when he was asleep he hit Graham's wife.]

When the family is eating the meal where they got to choose their own food they show a shot of Bo. She has a whole plate of spaghetti. After they show Mel Gibson eating, they go back to Bo and she has a half plate of spaghetti. [Mel Gibson has taken some of Bo's spaghetti.]

Almost every time Morgan takes a puff from his inhaler, he doesn't depress the pump and therefore would not get any medicine. [With the type of inhaler used, it is possible to activate it by a deep breath alone, thus negating the need to press it every time.]

I still can't get over how stupid the aliens are in this movie. If they are an advanced race that can travel through space, why are they naked and unarmed in their invasion? You'd think some weapons, armor or tools would help. [Morgan explains to Mel Gibson from his book that the aliens wouldn't bring weapons of their own because of the fear that man would eventually use nuclear weapons and therefore rendering the planet useless for them to use.]

After Merrill kills the alien he comes out into the garden where Graham is trying to revive Morgan. There are huge pieces of broken panes in the upstairs windows which weren't there when Graham came out of the house a minute before. [No - the windows are consistent through both shots (the first and third broken, with the second being intact).]

When the policewoman talks to Graham before she drives off there is a very clear reflection of a crew member with a white t-shirt in the red light of the police car. [What looks like a t-shirt is the break in the overhanging tree's leaves. You can make out Mel Gibson's profile, though.]

In the scene when the whole family is in the closet watching the invasion on TV, the TV is shown, and there are no reflections of the family, even though they are sitting and standing right in front of it. [You are being shown the actual footage, not seeing it from the perspective of being in the room, which would have shown their reflections on the TV.]

In one scene Mel Gibson is in his bedroom with a bathrobe on and bare legs. He hears his children talking and walks into their bedroom, again with bare legs. He walks into their room and sits on the bed to read their book. When he sits on the bed, he still has the bathrobe on but now also has jeans on. [The reason that no other women noticed this is that Mel Gibson is not wearing jeans. When he sits between his children his bathrobe covers his legs, and the 'sunlight' on the lower part of the bathrobe gives it a slightly bluish, jeansy tinge. But the fabric is terry.]

When Graham Hess (Mel Gibson) goes to meet his family for pizza, he sits down and they all stare at Ray Reddy (Shyamalan, in the red truck). As the camera pulls back out of the doorway, you can see that his slice of pizza is half eaten already, although he couldn't have been eating as he was staring at Reddy as he arrived. [Graham's slice of pizza stays complete during the scene, only in the last shot the cheese has started to slide off.]