Back to the Future

Corrected entry: Mayor Red Thomas in the 1950s based on his picture, looks to be around age 50. However, in 1985, when he is a bum, he still looks about the same age, even though he should be around 80 years old now. Granted, some people age better than others, but it is doubtful that an old man living on the streets would even survive for very long, let alone age gracefully.


Correction: You are assuming Red has lived on the streets for a long time. We have absolutely no information about how long he has been a bum; he could just as well be a youngish-looking 80-year-old who just recently suffered a decline in fortune and became homeless as a result.


Red the homeless guy is not former mayor Red Thomas. Bob Gale said that Fox improvised the name on the day.

Corrected entry: At the beginning of the film, when Marty gets to the Doc's place he is wearing a watch, so he could easily know about the right hour in spite that the clocks are wrong.


Correction: 3 possibilities from the top of my head: 1. He wears the watch but never checks it, it's just a fashion statement for some people, next to that he just entered a home with a wall full of clocks, no need to check your watch as well. 2. The watch isn't working (it's digital). 3. The watch could be on the wrong time as well.


Corrected entry: The camera that Doc Brown used was a JVC GR-C1, (produced in March 1984) (Also, this particular camcorder was the first built in camera also to feature a tape deck built in).


Correction: A perfectly legitimate camera for someone to have in the year 1985.


Corrected entry: At the end of the movie when Marty's alarm goes off, it is 10:27 am. His brother and sister are at the dining room table eating breakfast. They are both dressed in business attire. It doesn't make sense that two business persons would be eating breakfast at home at 10:30am.

Correction: It's also Saturday. Dave may have had a weekend business meeting, so it wouldn't have required him to come in at his regular time.

JC Fernandez

Corrected entry: When Doc is on the clock tower in 1955 during the storm, a closeup of his feet is shown. He is wearing shoes with velcro straps in this shot. Velcro did not yet exist in 1955, and Doc had not yet traveled into the future.

Correction: The concept behind Velcro was conceived in 1941, the idea was submitted for a patent in 1951, and the patent was granted in 1955. Not impossible that Dr. Emmett Brown, a member of a wealthy family and fellow inventor, could acquire some.

Phixius Premium member

In a deleted scene the Doc is shown going through his future self's belongings and finds the Velcro shoes in his luggage along with the hairdryer that Marty uses as "Darth Vader." Doc simply "stole" the shoes from himself.

Corrected entry: When Marty is trying to prove his futureness to Doc, he says that his sister was in the class of 1984 and then shows Doc a picture. Whenever the picture is shown however, the shirt says class of '81.

Correction: There's a vertical fold in her sweatshirt causing the '4' to be compressed so it looks like a '1' if you don't look too closely.

Corrected entry: This one is tricky but important in view of Doc's concern about doing anything that will alter the future. The lightning rod on the clock tower would have been connected to ground with a thick cable. Doc would have had to disconnect this cable to allow the current from the lightning to flow into his cable instead and hence to the time machine. We now know that a lightning strike is a result of a complex interaction of electric potentials between charges in a cloud and charges in the ground below. By disconnecting this grounding cable this interaction would have been disrupted, causing the lightning to strike at a different time or strike a different object on the ground.

Correction: If you touch a lightning rod while lightning strikes it, you will still get electrocuted. So, just like the energy would travel into your body, it traveled through Doc's cable. No need to disconnect the ground. If grounding a power source kept it from charging any thing else, no electrical appliance would ever function.

Phixius Premium member

Correction: "VODKA" (at the bottom of the label) is not spelled backwards. I think you're confusing it with the brand of vodka, POPOV. Only the last few letters are visible in the shot. ("-OV").

JC Fernandez

Corrected entry: When Doc is having the DeLorean do the burn out to get the car up to speed, the car is spinning its wheels up to 65 mph and Doc releases the brake. Now the car takes off, but the car would lose most of the speed the tires had built up as it is starting from essentially a dead stop even though the speedometer still shows 65 mph. Think of it this way, the back tires may be moving at 65 mph but the front tires are not. There is no physically possible way for a car to jump from 0 to 65 mph instantaneously using only its tires no matter how fast they were rotating. Even an F/A-18 needs a catapult to get that kind of speed so quickly. (00:21:35)

StopNGo & Girls

Correction: If the speedometer was hooked up in such a way as to show 65MPH as the speed before the brake was released, it would still show it afterward. The car was never going 65, true, but the tires were telling the speedometer it was. For whatever reason this is how Doc wired it all together. The tires wouldn't slow down suddenly just because the brake was let up, they'd continue to skid until the car's speed matched their own.

Phixius Premium member

Corrected entry: When Loraine tries to kiss Marty in the car and he pulls away, she asks if something is wrong, but instead of calling him "Calvin" (as in Calvin Klein) she calls him "Marty."

Correction: When Marty first met her, and she thought his name was Calvin Klein, he told her his friends called him Marty. She referred to him as Calvin and then Marty in the scene in Doc's garage, and she calls him Marty in their last scene before he goes back to 1985. Clearly she's getting used to calling him Marty.


Corrected entry: When Marty is plugging his guitar in to the mega amp, the amplifier end of the cable is stereo (like you would use for headphones) and the guitar end is the correct mono connector.


Correction: This is obviously something Doc Brown built himself, not an "off-the-shelf" item. For whatever reason he wanted, needed, or settled on a stereo connection in the amp.

Phixius Premium member

Corrected entry: When Doc is on the clock tower attempting to reconnect the cable, he pulls it and disconnects the other end (indicating the cable has just enough slack to touch the ground from point A and then be inches short of point B). Doc then connects the cable and then ties the cable around the clock hands. The other end of the cable is only held by a fallen branch, if he were to really propel down the cable, he would have gone completely vertical down. When he lands, the cable would have been shorter due to him tying it to the clock hands. Also a shock of 1.21 gigawatts would have landed him in the hospital if not the funeral home.

Correction: Several "mistakes" in one entry, that alone should have gotten this entry rejected. The cable is more than long enough in a more or less straight shot from one end to the other. The branch is keeping from being a straight shot. That's why, even though it's wrapped arond the clock hand, it's still long enough after Doc disentangles it form the branch. If all of Doc's weight, and whatever more leverage he gained by pulling against the clock hand, wasn't enough to move the branch, him rapelling down the cable wouldn't have moved it either. It was stuck in place. The jolt he got wasn't a full 1.21 gigawatts either. The cable was surely insulated and he was wearing gloves, also certainly insulated, if I remember that small bit correctly.

Phixius Premium member

Correction: Untrue. There was an MCA entertainment exec, noted for his often odd studio notes, who suggested (during post-production) that this should be the title of the film (as this is the title of the comic young Peabody shows to his folks when Marty arrives in 1955). But it was never given serious consideration and was certainly never a used title.

JC Fernandez

Corrected entry: The license plate of the time machine is spinning on the road in the middle of the fire tracks - further down the track than where Doc and Marty stand. But the car (and therefore the license plate) was never there. It had already 'jumped'. Otherwise the license plate had to pass through Marty.

Jacob La Cour

Correction: Having just watched the scene in question, I can confirm that that is incorrect. It may be confusing because they turn their bodies to look at where the car would have been. They then turn back forward to the last place that they saw the car which is what Marty was then focusing on. After it shows the plate spinning, the next shot shows Marty and Doc facing the camera, and also the plate.


Corrected entry: Towards the end of the movie when Marty is driving down the street in 1955 to go back to 1985, Doc is trying to get the electricity cables back together for the lightning needed to send Marty back to the future. Doc then slides down the cable to connect the cable to the other one over the street. As he's about to connect the cable, the lightning strikes. He then has at least half a second to connect the cable and he does. But the lightning takes at least two seconds to get from the tower to the car. This is way to slow for electricity. Electricity can move around the world four times in a second.


Correction: The velocity of electric current depends very much on the insulation of the wiring being used. For instance, in open air (such as lightning) electricity is very fast, but within rubber-insulated wiring, it is slower.

JC Fernandez

Corrected entry: When Marty goes back to Nov. 5, 1955, the time is set for 8:30 AM. When he arrives he walks around a bit in amazement and then heads towards Hill Valley. The sign he passes says "Hill Valley 2 miles." When he gets there, look at the clock tower, the time is about 8:30 (give or take). He couldn't have run the two miles in under a minute even without hiding the DeLorean.

Correction: No such thing occurs. When he's being chased by the Libyans at the mall, the display reads the destination time at sometime during the 6 o'clock hour (the minutes are not visible). This is the last time we can see the precise time on the time circuit display until the night of the storm. Regardless, in the scene in question, the time circuits are out of power and malfunctioning so they could have given a false reading.

JC Fernandez

Which scene, the storm or the Libyan attack? Also, "the time circuits were out of power and malfunctioning"? I'm pretty sure they weren't properly failing until part II.

Corrected entry: In the beginning, when Doc awakens Marty in the beginning he tells him to meet him at "Lone Pine Mall" (the altered name of the mall after the movie) but when Marty arrives at the mall the sign still reads "Twin Pines Mall". How come Doc is referencing the new name that hasn't changed yet? And this scene occurred just before any time traveling took place so it's definitely not a paradox (most likely a script error).

Correction: I think you need to check again. First of all, Doc does not "awaken" Marty. Marty is visiting Doc's house, and has been trying out the gigantic loudspeaker (knocking himself backwards). Second, Doc clearly says "Twin Pines Mall", and has done so in every version of the movie I have ever seen.


Corrected entry: In 1985 When Doc is recording himself as he sees the terrorists come with their trucks. Marty is supposed to say, "who, who found you?", or something like that. But as Doc is watching the tape in 1955, Marty never says anything.

Correction: Doc stops and rewinds the tape before Marty says anything.

Corrected entry: During the first Lou's cafe scene in 1955, Marty asks for a Tab, then a Pepsi-Free, then "something without any sugar in it." Pepsi-Free was "free" of caffeine, not sugar (Diet Pepsi was "free" of sugar). Marty knows this because he is seen with both Diet Pepsi and Diet Pepsi-Free in 1985. Of course, had Marty asked for Diet Pepsi in 1955, Lou would not have been able to say "Hey, you want a Pepsi, pal, you're gonna pay for it." (00:38:30)

Correction: Marty simply changed his order. He was just naming his preferred drinks, not necessarily the ones that don't have sugar.

Corrected entry: In the scene in the beginning at the mall when Marty is being chased by the Libyans, the tripmeter on the Delorean goes from about 17 miles to 87 miles in a matter of seconds.

Correction: The inconsistency of the trip counter has already been submitted.


Continuity mistake: When Biff and his goon friends are in Biff's car, as they chase Marty on his borrowed 'skateboard', the car's rearview mirror repeatedly disappears and reappears, and the side mirror changes from round to square repeatedly. (01:06:50)

Super Grover Premium member

More mistakes in Back to the Future

Marty McFly: Calvin? Why do you keep calling me Calvin?
Lorraine Baines: Well, that is your name, isn't it? Calvin Klein? It's written all over your underwear.

More quotes from Back to the Future
Back to the Future trivia picture

Trivia: Eric Stoltz was originally cast as Marty. After filming quite a few scenes they realised his acting style was too dramatic for the humor desired, so they cast Michael J Fox (who they couldn't originally get because he was busy with the TV show Family Ties). Filming was on weekends and nights around his TV schedule and using his double at other times.


More trivia for Back to the Future

Question: What does the saying "Why don't you make like a tree, and get out of here", mean?

Answer: It's a way of saying "scram" or "get lost." But Biff is so dim, he doesn't realize he's saying it wrong; the expression is "make like a tree and leaf", with the joke being that "leaf" is meant to sound like "leave."

Cubs Fan Premium member

More questions & answers from Back to the Future

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