Question: When Tom Cruise is battling to get free of the tentacle pulling him into the ship from the cage, there is alien (presumably) writing visible on the underside of the tripod just beyond his arm and above the lights. Can someone shed light on what this may say (theories, previously suggested writer/director thoughts)?
Question: Before Tom Cruise is ushered into the tunnel in Boston, he tells the army man, "______ is the key." What does he say; what is the key?
Answer: It is actually the army guy who says this, not Tom Cruise. Cruise notices the birds are able to land on the tripod and realizes the shields are down. He points this out to the army guy who yells to his men "The Javelin is the key." The Javelin is the anti-tank weapon they use to take the tripod down.
Question: What happened to Ogilvy?
Answer: Ray couldn't trust Ogilvy to be quiet when the aliens arrived. So Ray had to kill Oglivy in order to save him and his daughter.
Question: Is it realistic to think that Manny, the garage mechanic would have NO idea of what was going on when Ray steals the van from him? After all this is probably about 20 minutes after the Tripod emerged a few blocks away. Surely news would travel faster than that! And you'd think Manny would have felt the massive tripod moving or heard the destruction.
Answer: There's no electricity, so the only way Manny could have heard was through word of mouth. The few survivors from the initial attack scattered in different directions and if any happened Manny's way, they were probably too busy running to stop to explain anything to a garage mechanic. As for his awareness of the destruction, anything he may have felt or heard he likely dismissed as further manifestations of the freak electrical storm.
Question: Does anyone have any clue as to why the aliens are vapourising people when they first appear? They never seem to do it again after that one scene (instead opting to grab them and drain them). Any help would be appreciated.
Answer: The aliens saw the humans as an immediate threat to their ship getting out from underground, so opted to vaporise anyone in the near vicinity so that it could leave the ground unimpeded.
Question: When all of the people are trying to get on the boat, how does a tripod just randomly come out of the water like that?
Answer: While it's never explained, there are several possibilities: as all the tripods were buried deep underground, this one may have been lodged below the lake and was just emerging. Also, a tripod could have "walked" from somewhere else, then went underwater to explore, and, attracted by the ferry's noise and movement, surfaced to investigate. It's also conceivable that, observing how ferries worked, it slipped underwater from further away and ambushed the boat, or the tripod was simply making a crossing from one shore to the other (traveling underwater if it was deep enough) and just happened upon the ferry when it did.
Question: Is there any indication as to where the aliens come from and what exactly they want?
Answer: In the original George Pal version they were Martians and the reasoning for what they were doing was never explained. In this version, its never explained where they come from, but their mission is simple, to eradicate human life from Earth, and use our bodies to fertilise the planet, probably so that they can colonise the planet for themselves.
Question: Several other answers and corrections state that the reddish liquid sprayed by the tripods was what essentially grew the red vines. However I thought I heard someone in the film say something along the lines of "using us (i.e. blood) as fertiliser". Can someone please clarify?
Answer: Since the tripods tended to spray the red fluid shortly after pulling a human into themselves, it seems a good assumption that the red fluid is essentially blood. Given this, it seems likely that the "spore" of the vines is spread in the red fluid.
Question: At the end, a tripod collapses after behaving erratically for an hour, because the aliens inside were dead or dying. If so, wouldn't the tripod just stop moving and stand there because the aliens were too sick to operate it?
Answer: Depends on exactly how the disease affected the aliens. They might have entered a state of dementia and started piloting erratically, or even just have muscle spasms that knocked the controls around inside the cockpit.