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Why didn't Old Biff come back to an alternate 2015?

Doc did offer to reshoe the horse and Mad Dog refused his offer, Tannen was a drunk and a criminal and probably wouldn't just settle for cash.
Wrong:
Buford: You owe me money, blacksmith.
Doc: How do ya figure?
Buford: My horse threw his shoe. Seeing' you was the one who done the shoeing, I figures you was responsible.
Doc: Well since you never paid me for the job, I say that makes us even!
Buford: Wrong! See I was on my horse when he threw his shoe and I got throwed off. And that just caused me to bust a perfectly good bottle of fine Kentucky Redeye. So the way I figure, blacksmith, you owe me $5 for the whiskey, and $75 for the horse.

Hey, just because you know a guy is gonna kill you, that's no reason to be a bitch.
 
I skipped through most of the replies, but the show pretty much established that there was a grace period before changes take place (probably to avoid having timelines springing up left and right with every step they took in the past). It was most evident in the delay of Marty's fading the moment he interrupted his mom and dad meeting for the first time.

The real problem is why did they show up in the fudged up past so quickly? The aforementioned deleted scene showed Grandpa Biff fading way faster than Marty was, but there's no real explanation for why that is, nor for why the future didn't begin to change around them at the same time (and sorry, but the changes in 1985 were too big for the "both 2015s were roughly the same" to be plausible; Biff's casino in place of the courthouse, for instance). It also doesn't explain the paradox that was created upon their arrival in the alternate timeline; Doc was never able to have built the time machine, nor would Marty have been involved with Doc unless they met before 1973 or so. They would have had to have traveled straight to 1955 in order to have a chance of avoiding that one.

To me, that's the bigger problem. 'Course, Doc's worry about paradoxes and self-meeting-self issues was blown out the door when Jennifer met herself, so maybe they were implying that time's much more forgiving than they thought about such things.
 
Hey, just because you know a guy is gonna kill you, that's no reason to be a bitch.
Really? I can hardly think of a better one - unless, of course, one considers a grouping of Rachel Weisz, a fresh tap of Fat Tire beer and a steaming jacuzzi.
 
I was driving home today and I got to wondering. Why didn't Doc or Marty notice the time display?

Where you're going

2015

Where you are

2015

Where you Where

1955
 
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They probably simply didn't notice it. Say someone steals your car while you're in work, drives it for 1,000 miles, parks it back in your spot and you come back to it none the wiser. Would you notice that the odometer has advanced 1000 miles?

(And it's "you're." ;))
 
How can they not have noticed this?

95777281.jpg



I wouldn't mind seeing an animated short called "Back to the Future Origins" (just for an example) depicting Marty's first meeting with Doc. Or maybe Bob Gale could do a mini-series for Boom Studios comic wise.


According to the original Part I script, Doc shows up at Marty's house and hires Marty to sweep his garage in the year 1983. Doc gave Marty total access to his record collection, and they became friends.
 
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They probably simply didn't notice it. Say someone steals your car while you're in work, drives it for 1,000 miles, parks it back in your spot and you come back to it none the wiser. Would you notice that the odometer has advanced 1000 miles?

(And it's "you're." ;))

YOU'RE obviously talking about Ferris Beuller's Day Off, but I'm not positive if you know that and the movie is not just leaking out of your subconscious surreptitiously?
 
It was a random example to make my point. The "last time visited" display is likely a readout on the panel (not necessarily in the line of sight) that Doc wouldn't give a second notice. Should Marty and Doc have seen it? Maybe. But they didn't, and it's fairly easily shrugged off as just being they didn't notice it. Simple as that. Seriously, would you notice if your odometer was off by a few miles? Classic low-mileage Ferraris aside? ;)
 
Also.. Old biff must have been pretty smart to:
- know how to turn the time circuits on
- set the destination time (thats pretty easy though)
- know that you have to get to 88 miles an hour to go through time.

Old Biff must have also landed to put trash in Mr. Fusion before he want to 1955 (yes, he even knew he had to do this to). When Old Biff brought the Delorean back to 2015 (why did he even do that? lol) the Doc was putting trash in the Mr Fusion before He, Marty and Jennifer took off to head back to Alt 1985. So, since Doc was putting trash in Mr. Fusion means he never did it after they arrived in 2015 and when Old Biff took the car, Mr. Fusion was empty, so he must of landed and filled it before going to 1955.

It is concievable that Old Biff had the car for a day or so before going back to 1955 to figure this stuff out. He just came back to the time he first took the car. So there could have been 2 Deloreans in 2015. Speaking of which, i find it amusing that there are 4 different Delorians in 1955!

- The original Delorian from the first movie
- The Delorian Doc and Marty cam back to 1955 with
- The Delorian old Biff came back with.
- the 70 year old Delorian in the Mine.
-
 
It is concievable that Old Biff had the car for a day or so before going back to 1955 to figure this stuff out. He just came back to the time he first took the car.

Maybe it took him years (offscreen) to figure everything out. When he collapsed in his last scene, he wasn't being erased from the timeline, he was dying of old age! :p
 
I think I read it suggested somewhere that Old Biff may have seen/found the JVC video-camera Marty used in the first movie to film "Temporal Experiment #1" in the car, watched it, and learned how to operate the DeLorean. So, yeah, it's possible Doc did leave the manual in the car. ;)
 
I suppose it's also possible that Mr. Fusion was a standard component in 2015 cars (even if Doc hadn't yet managed to get it working for his internal combustion engine). Perhaps all 2015 cars are electric and therefore more compatible with Mr. Fusion...
 
Seems unlikely. First off, we see a car fueling up in the establishing shots of 2015 as Marty walks around the town square. (A car has landed at the Texaco station.) It's anyone's guess if this is still "gasoline."

Secondly, a fusion reaction would produce a lot of energy. Doc needed the fusion generator to produce the massive amount of electricity he needed for the flux capacitor, 1.21gw would be equal to about 33,000 gallons of gasoline. The average American uses somewhere around 600 gallons of gasoline a year. So if the fusion generators are being used to fuel cars, the car would come from the dealer with all of the fuel it would ever need.
 
#2.) NuMarty did replace Marty-Prime. However, during NuMarty's time in 1955, one of his changes somehow jostled Mr. Parker's testicles just enough so that Jennifer ended up looking like Elizabeth Shue instead of Claudia Wells. When NuMarty returned to 1985 to witness Marty3's departure, he also found himself startled by a bizarro universe where Jennifer looks totally different. Then Marty3 travels back in time, lands right on top of NuMarty, replaces him, makes the same changes, and is this time not alarmed when Jennifer looks like Elizabeth Shue. Thus, it's actually Marty3's adventures that we're following in Parts II & III.

Okay, now give a movie explanation for why Marty's dad looks different in various scenes in Part II

;)

I was sorely tempted to explain that through some kind of actions that Marty-Prime or NuMarty engaged in in 1885. However, there's just too many remaining stock shots of Crispin Glover in Part II to make that feasible.

I skipped through most of the replies, but the show pretty much established that there was a grace period before changes take place (probably to avoid having timelines springing up left and right with every step they took in the past). It was most evident in the delay of Marty's fading the moment he interrupted his mom and dad meeting for the first time.

The real problem is why did they show up in the fudged up past so quickly? The aforementioned deleted scene showed Grandpa Biff fading way faster than Marty was, but there's no real explanation for why that is, nor for why the future didn't begin to change around them at the same time (and sorry, but the changes in 1985 were too big for the "both 2015s were roughly the same" to be plausible; Biff's casino in place of the courthouse, for instance). It also doesn't explain the paradox that was created upon their arrival in the alternate timeline; Doc was never able to have built the time machine, nor would Marty have been involved with Doc unless they met before 1973 or so. They would have had to have traveled straight to 1955 in order to have a chance of avoiding that one.

We're not saying that all of the two 2015s looked the same, just that one Hilldale neighborhood.

As for why old Biff disappeared far more quickly than Marty did in 1955, I think that the rate at which you disappear depends upon your odds of rectifying the situation. When Marty first prevented his parents from meeting, time granted him a grace period because there was still a chance for him to get them back together within a week with minimal changes to the timeline. The Enchantment Under the Sea Dance was the point of no return. After that, there was no chance of them getting together (or else, even if they did get together later, it would be under such different circumstances that Marty still would never have been born).

Meanwhile, by the time old Biff returned to 2015, time recognized that there was no chance that he would be able to repair the timeline, so his disappeared almost instantly.

As for your other point about Marty, Doc, & the Delorean in 1985A: First, lets assume that the Delorean, if not its passengers, is 100% immune to erasure through self-caused paradoxes. Second, lets assume that Marty & Doc did replace their 1985A selves and that there isn't simultaneously a 2nd Marty in Switzerland & a 2nd Doc in the nut house. It's been pretty well established that the memories of a time traveler are immutable. Marty remembers the timeline he's from, not the timeline in which he's arrived. While a time traveler can jeopardize his own existence, he can't jeopardize his own memories. So since Marty & Doc were still alive in 1985A, they were in no danger of erasure in that time period, regardless of how long they remained there.

'Course, Doc's worry about paradoxes and self-meeting-self issues was blown out the door when Jennifer met herself, so maybe they were implying that time's much more forgiving than they thought about such things.

I'd think that, if there were such a thing as a world-destroying paradox, Marty would have already caused it when he nearly erased his own birth. I concur that time is much more forgiving than Doc implied. All time really cares about is that everything tallies in the end.

Speaking of which, i find it amusing that there are 4 different Delorians in 1955!

- The original Delorian from the first movie
- The Delorian Doc and Marty cam back to 1955 with
- The Delorian old Biff came back with.
- the 70 year old Delorian in the Mine.

Plus the raw materials used to build the Delorean that were actually native to 1955. So actually, those same atoms coexist at 5 different points in space at that time.
 
It's noted in the FAQ that when old Biff returns, the Last Time Departed display reads 6:38pm, despite the fact that old Biff gave himself the Almanac much earlier in the day. Perhaps the reason why he left so much later was because it took a lot of trial & error to figure out that Mr. Fusion already needed to be refueled again.

The flying locomotive, to me, was just absurd. It makes a degree or two of sense that the "time machine" Doc built using 1890s components would have to be as big as a locomotive (the "tender" for all we know could've been the entirety of the time machine's working components. And one does wonder how Doc got a steam-engine to generate 1.21 gigawatts.

I always assumed that, in the ensuing years between 1885 & when he built the time train, he discovered a much more efficient way to generate a time vortex that didn't require nearly as much power.
 
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