Corrected entry: It would have been a lot easier for Doc to construct a rudimentary rocket using gunpowder as the propellant than the highly unlikely solution that he ended up doing. He could have attached two pipes, either side of the car. Gunpowder from bullets, shotgun cartridges etc. Wouldn't even need the railroad wheel conversion although I reckon would be better on rails than a dirt road.Bodragon
Corrected entry: During the train sequence, when it's pushing the DeLorean, there is a wide shot of the green steam coming out of the train. The steam looks computer generated because it is far too bright and appears slightly away from the train. (01:36:40)
Corrected entry: When Marty finally returns back to 1985 on the finished train track the ravine has been renamed in honor of his alias "Clint Eastwood." But why? The townspeople wouldn't know it was him on the train and Doc wouldn't have been so foolish as to tell anyone "Clint" hijacked the train after becoming a hero from the Tannen fight. It should have still been called Shonash Ravine.
Corrected entry: When Marty asks the Doc if they can take Clara with them to the future, the Doc says no, because you mustn't tamper with the time continuum for your own benefits. However, in the second film, he does change the continuum for Marty and Jennifer's benefits, by going with Marty and Jennifer to change the future, so their son wouldn't go to jail.
Corrected entry: The jacket suit that Biff wears in the garage scene in 1985 in Part 3 is red and gray. It is green and gray in the other films.
Corrected entry: When the train is pushing the DeLorean and "Clara" on the train and trying to get to Doc, Marty is in the driver's seat, then the next shot he's in the passenger seat to where he passes the hover board to Doc, then when Marty passes through time to Eastwood Ravine he's back in the driver's seat.huggiewk
Corrected entry: When the DeLorean suddenly appeared in 1885, the Indians have absolutely no reaction at all. There is no possible way that they wouldn't have been the least bit spooked or confused, and we should have seen some semblance of this in their actions, but they just keep charging on like nothing happened. It'd be like a an alien spaceship appearing out of nowhere in Times Square and people not even batting an eyelash.Knever
Corrected entry: Doc Brown can build a time machine but is unable to figure out how to build a still to extract pure ethanol from Whisky in order to use as fuel for the DeLorean. He stated to Clara that he is a "student of all science" so this should include chemistry. Chemists know how to build a still. Doc, however, tried to fuel the car with strong Whisky without distilling it.Acteon
Corrected entry: In 1885 Marty meets his great-great-grandparents. His great-great-grandfather looks like him so that we can be sure of their relation. BUT, his great-great-grandmother looks like his own mother. This makes no sense as in this way his parents are related by blood due to the resemblance of their ancestors.
Corrected entry: There really should have been no reason for Marty to risk going back to 1885 to rescue Doc. Obviously, 1985 Doc being killed by Tannen, did not negate his eventual existence (as evidenced by 1955 Doc still existing). It's understandable Marty would want to prevent his friend being murdered, but when they learned of this fact in 1955, this event had already happened 70 years ago. 1955 Doc surely would have realized the pointlessness of Marty going to rescue his future self in the past when 1955 Doc would eventually become 1985 Doc again through the natural course of time. In light of this, surely 1955 Doc would have explained to Marty there was no reason to go back and possible cause more damage to the Space-Time Continuum.
Corrected entry: When doc picks out clothes for Marty to wear to the old west, Marty asks if they are authentic, so Doc says "sure, haven't you ever seen a western?" Considering Doc is supposedly a genius and the old west is his favorite historical era (he himself said it was his favorite era in part 2) he should know that Hollywood's version of old west clothing and the reality of it are two different things. Doc should know better than to base his knowledge on Hollywood films.calidude
Corrected entry: Doc begins telling Marty about his accident with Rolls-Royce, before stopping himself and telling Marty it's better that he doesn't know. How exactly did Doc find out about the Rolls-Royce incident in the first place? When Doc was in the year 2015, he didn't actually talk to Marty or any of his family or Needles, so who told him about the Rolls-Royce incident? At that point, it had happened 30 years prior, so it's doubtful that a minor car crash from 1985 would still be the talk of the town in 2015.calidude
Corrected entry: When Seamus McFly goes to comfort his crying baby son William, we can see that he is a very affectionate father. This was practically unheard of in the 19th century. Children were routinely beaten for even the smallest infractions at the time, it was the norm. Since William was only an infant, I doubt he would be beaten, but his father would not be so kind towards him either. His attitude would be more like "shut up kid, what are you crying about now?". The whole concept of being affectionate towards one's children is more of a 20th century idea.calidude
Corrected entry: Why would Doc label the toy car "time machine" when they both knew what it was? Having the car marked like that would only make sense for Clara to see it when she arrives at the livery so she would assume that Doc was telling the truth when he told her he was from the future. Since Marty and Doc wanted to minimize their true identities and their association with the future, they should have covered the train set up, just in case they failed in their attempt and/or had to come back.