Corrected entry: Just after the Libyans arrive, Marty is seen jumping into the Delorean. If you look closely at his face in this shot, you can see that it's not Michael J. Fox. It's actually Eric Stolz, who was originally cast as Marty McFly.
Corrected entry: American police may be so lackadaisical that they don't attend the scene of a car racing noisily around a car park, followed by a loud crash of a van hitting a shed, but I find it hard to believe that they don't investigate continuous machine gun fire from the same area. There are occupied building all around the car park, and there is plenty of time for them to turn up.
Correction: They'd have to receive a call from someone to be made aware of the situation. If the neighbors thought it was just some teenagers screwing around with firecrackers, which is more likely (because how often to Libyan terrorists open fire right next door?), the police wouldn't exactly rush to the scene lights blazing and sirens blaring. There's very few minutes from when the Libyans start firing to when Marty goes back to 1955, and who knows how far away the nearest police cruiser is.
Corrected entry: When Marty is being chased by the terrorists, he disappears through time, and the terrorists crash their van into the photo-booth, which presumably stops them dead in their tracks. But really, how would trashing that small booth make the bad guys irrelevant from that point onward? They weren't killed. So realistically they'd all get out of their crashed van and proceed to wreak more havoc. Yet in the time it takes Marty & Doc Brown to gather up all their stuff and drive away in Doc's van, the terrorists don't lift a finger to chastise them or confiscate the remaining plutonium.
Correction: There are any number of explanations: 1. The Libyans may have been rendered unconscious in the crash, which while not explosive *did* knock the vehicle to its side and at least one Libyan was unrestrained. 2. The parking lot was the site of machine gun fire and multiple explosions, and the Libyans may have fled the scene before the police arrived.
Corrected entry: When back in 1985 Marty's mom asks if this is the night for the big date, Marty answers "How can I go to the lake when the car is wrecked?" His family reacts by going out and checking George's BMW. Seconds later we see that Marty has his own truck - shouldn't they have been checking on that instead? And if it's because he talks about the car (i.e. the BMW) instead of the truck, they should have wondered why he was going to take his fathers BMW up to the lake instead of his truck.
Correction: They're probably used to hearing Marty refer to the truck as "the truck," whereas George's car is "the car." Once they heard Marty say the car was wrecked, they didn't have time to think logically and conclude, well, the car may be wrecked but you're taking the truck. More likely they were startled and wanted to go check on the car right away to find out what Marty was talking about.
Corrected entry: Seeing as Marty changed his future, shouldn't the photo of himself, his brother and sister be different?
Correction: Not really. The events of that day, leading up to the picture being taken, could have been the same.
Corrected entry: How does Doc know that lightning will hit the clock tower at precisely 10:04:00? Since the minute hand only advances once a minute, it's possible that the clock was struck anytime between 10:04:00 and 10:04:59.
Correction: Actually the gears inside the clock tower would tell you how many seconds had passed, so assuming that the story about the clock tower was researched correctly they would be certain that the bolt hit at 10:04 precisely.
Corrected entry: When Marty goes to see Doc in 1955 we see Einstein as a puppy. This would mean that in 1985 Einstein would be 30 years old. Though not completely impossible (the oldest dog in the world ever was 29) it is highly unlikely.
Correction: The dog in 1955 is a different dog. The Doc even calls it by a different name after another famous scientist, Copernicus.
Corrected entry: When the DeLorean is struck by lightning, there is a second stunt person in the passenger seat of the DeLorean. Since they never re-shot this scene, you can see it in all three BTTF movies. (01:36:35)
Correction: No there isn't - that is just the seat and headrest. I have zoomed in and there is just a seat - no person.
Corrected entry: We continuously see that the DeLorean travels through time, not space (for example, if you departed in California, you would not arrive in Australia). Putting that, and the fact that Hill Valley is in California, into consideration, if you did use the car to go to the signing of the Declaration of Independence or the birth of Christ, as Doc suggested at the beginning of the movie, you would have to take either a cross-country road trip, or an across-the-globe road trip, the latter of which, I need not tell you, is impossible.
Corrected entry: In the scene when the clocks are chiming, Doc says to Marty all of the clocks are 25 minutes slow, but in the opening scene with the clocks, there are two that are set at 8:10 (one on the coffee maker and and a small black clock next to the TV). The rest are set at 7:55.
Corrected entry: When Doc is attempting to hook the cable to the clock, in 1955, he has on shoes with Velcro. Velcro had not been invented yet.
Correction: Utter nonsense. George de Mestral was granted a worldwide patent for Velcro in Switzerland in 1951, and the US patent followed in January 1952. It was an instant hit and all sorts of Velcro products flew off the shelves, including Velcro shoes.
Corrected entry: At The End of the movie, when Marty and Jennifer are in the DeLorean with Doc, Marty says "You don't have enough road to get up to 88 miles an hour". But only a few hours ago, minutes to the viewer even, after Doc dropped Marty off at home, we see the DeLorean back out of the driveway and speed off, and we hear and see the sound and light of him going into the future down the same stretch of road. Marty is either not good with depth perception or the Doc must've driven through someone's house to get up to 88 miles an hour.
Correction: When Doc Brown goes into the future by himself, we see the DeLorean pull out of the driveway and race down the street, out of view, before it turns around and races past again and vanish into the future. Doc has apparently gone far enough down the street before turning around to give himself enough room to accelerate. After he comes back to pick up Marty and Jennifer, he only pulls out of the driveway rather than driving further down the street as he had before, prompting Marty's comment.
Corrected entry: Anyone else find it ironic that Einstein the dog was the world's first time traveler, while the real Einstein was the one who said that time travel is impossible?
Correction: Part of the "strange" world that Einstein explained in 1905 in his theory of relativity is that time and space are joined in our universe as a four-dimensional fabric known as space-time. Stranger yet is the concept that both space and time warp as mass or speed is increased. Einstein actually proved that time travel was theoretically possible, then spent the rest of his life trying to disprove it.
Corrected entry: If Marty had made such an impression on his parents which is how he was supposed to have got his name, surely they would have called their 1st son Marty and not Marty who was their 3rd child? (01:27:20)
Correction: His older brother could have gotten a family name. Which would trump an old friend's name.
Corrected entry: If Marty's family is so much more successful after his trip back in time, why do they still live in the same small house?
Correction: It could be a nice neighborhood. A larger house might have had a high property tax. Just because they moved up in the wealth sector doesn't mean they would have moved far above the upper-middle class level.
Corrected entry: In this movie when you go back in time you would get there at the exact time you on the time machine. At the end of the movie when Marty figures out he has all the time he needs he sets the time machine to 1:24 or some other hour with 24 as the minutes. When Marty gets back to 1985 he crashes into the movie theater, drives down the road, and says hi to the homeless guy. After all that Marty looks up at clock and you see that time just went from 23 to 24 minutes. Wouldn't it already be a few seconds after 24 minutes?
Correction: Not all clocks are synchronized. The clock in town might have been set a few seconds behind the clock in the DeLorean.
Corrected entry: Near the end when Marty gets locked in the trunk he says the keys are there with him. Why would the keys be in the trunk?.
Correction: It was an accident. Similar to locking your keys inside your car. My parents have done this several times with their older cars.
Corrected entry: After Marty gets off the stage after playing "Johnny B Goode" he runs into his future parents. His father thanks him for all his good advice. His mother asks him if they are ever going to see him again. Wouldn't they just assume that Marty will be back in school on Monday? (01:30:20)
Corrected entry: In the beginning, Doc and Marty meet at the Twin Pine Mall, and we learn that Doc has built a time machine, which runs on plutonium. He has a heavy case filled with several containers of plutonium, one of which he inserts into the DeLorean. Doc is then killed and Marty flees to 1955. When he goes back to 1985, he plans to get there ten minutes early in order to prevent Doc's death. However, the car runs out of gas and Marty has to run to the Lone Pine Mall on foot, thus getting there too late. He is devastated that Doc is dead. Why? There is more plutonium two feet from him, in the truck. He can just take some, put it in the car, and come back ten minutes early again--or thirty minutes, or an hour, or a day, or whatever he wants.
Correction: True, but this solution probably wouldn't occur to him moments after he saw Doc murdered, so it is conceivable that he would grieve for a while and then hit on the idea if Doc hadn't been wearing body armor.
Corrected entry: After Marty returns to the present, he wakes up in his room that is identical to the beginning of the movie, however the rest of the house i.e the living has changed and is more modern.
Correction: That merely tells us that Marty was more or less the same in both timelines, having similar tastes.
Which wouldn't happen. Because with loving, successful and self confident parents, there's no way a kid turns up just the same as with goofy, drunk, and pushovers parents.
Unlikely, but not impossible and therefore, not a mistake.
Correction: This has already been corrected once. When Michael J Fox took over the role, the costume was changed. Stoltz's Marty wore black Converse shoes in 1985 (as seen in behind the scenes photos), but when Fox took over the role, the character's shoes were changed to white Nikes. The person leaping into the Delorean wears white Nikes - it is definitely NOT Eric Stoltz.