Back to the Future - Back in theatres

Batman · Oct 31, 2010

Riddick said:

Baron Scicluna said:

There's one other thing, that, cross-threading with the Time-Traveler thread, that I think is a plot hole.

On the other thread, someone talks about how everything changes in history as soon as a time traveler appears. Molecules breathed in, bugs swatted, ect.

In Back to the Future, Marty goes into the diner, and eventually orders a coffee, and he drops the 15 cents down to pay for it. I would think that was 1985 money, that's was going to be circulated around Hill Valley. Wouldn't someone eventually look at the coin dates and screw up time? (Like in "Somewhere in Time")
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There's an even bigger problem in the sequel, when grandpa Biff goes back in time to give young Biff the sports almanac, and then returns to the same future he left. Shouldn't be possible based on everything else we see in the movies.
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Grandpa Biff isn't the same one who got the sports almanac, though. That was young Biff. When we see him in the alternate 1985, it's young Biff aged 30 years. As long as his trip to 1885 wrapped up before young Biff placed his first bet, Grandpa Biff should've gone back to his own miserable existence in 2015.

Similarly, it's assumed that Marty "changed history" when he returns to 1985 at the end of part 1. What he actually did was create an alternate reality, similar to what happens in part 2.

Baron Scicluna · Nov 1, 2010

Riddick said:

Baron Scicluna said:

There's one other thing, that, cross-threading with the Time-Traveler thread, that I think is a plot hole.

On the other thread, someone talks about how everything changes in history as soon as a time traveler appears. Molecules breathed in, bugs swatted, ect.

In Back to the Future, Marty goes into the diner, and eventually orders a coffee, and he drops the 15 cents down to pay for it. I would think that was 1985 money, that's was going to be circulated around Hill Valley. Wouldn't someone eventually look at the coin dates and screw up time? (Like in "Somewhere in Time")
Click to expand...

There's an even bigger problem in the sequel, when grandpa Biff goes back in time to give young Biff the sports almanac, and then returns to the same future he left. Shouldn't be possible based on everything else we see in the movies.
Click to expand...

I thought about this again and the second movie explained it. When Marty meets up with Doc again in the alternate 1985 dominated by Biff, Marty says that they should go into the future and stop Grandpa Biff from giving the book. Doc says they can't, because they would go into an alternate 2015. Which was why they had to find out when young Biff was given the book, and ended up back in 1955.

expendable · Nov 1, 2010

Baron Scicluna said:

expendable said:

Baron Scicluna said:

Riddick said:

Baron Scicluna said:

There's one other thing, that, cross-threading with the Time-Traveler thread, that I think is a plot hole.

On the other thread, someone talks about how everything changes in history as soon as a time traveler appears. Molecules breathed in, bugs swatted, ect.

In Back to the Future, Marty goes into the diner, and eventually orders a coffee, and he drops the 15 cents down to pay for it. I would think that was 1985 money, that's was going to be circulated around Hill Valley. Wouldn't someone eventually look at the coin dates and screw up time? (Like in "Somewhere in Time")
Click to expand...

There's an even bigger problem in the sequel, when grandpa Biff goes back in time to give young Biff the sports almanac, and then returns to the same future he left. Shouldn't be possible based on everything else we see in the movies.
Click to expand...

That I can see, in a way. Young Biff doesn't make the bets until three years later. Grandpa Biff goes back to 2015 to the exact moment that he left. Maybe it takes three years for the future to actually change?

nmmetsfan said:

Why must people pick apart a movie about time travel for being unrealistic?
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For one thing, the money thing is a plot hole that could have been easily rectified:

Diner owner tells Marty to pay at the front. Marty notices George already leaving and runs out without paying. Problem solved.

And it's a plot hole that had been a main climax of a movie from several years earlier (that my mom made me watch, for some inexplicable reason).
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This is explainable. Dimes were silver back in 1955, so if Marty gives the diner guy a 1985 coin, it would be the newer design, and dismissed as counterfeit when it was found. Nickels can be in circulation for many, many years. You probably have one from 30 years ago in your pocket, right now, so all it would have to be is a 30 year old nickel, and that coin would be legitimate.
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I don't know if I'd buy that explanation for the nickel. Marty didn't look at the coin dates before putting the money on the counter. Yeah, he might have had a 1955-era nickel, but what would the odds be?
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Just trying to figure out how it could've passed. Of course, it would've been clever if they could've shown a newspaper headline in the new 1985 talking about a "miss-striked" 1955 nickel that read to look like 1985, selling at auction, or something like that.

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Back to the Future - Back in theatres

Batman Well-Known Member

Baron Scicluna Well-Known Member

expendable Well-Known Member

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Back to the Future - Back in theatres

Batman Well-Known Member

Baron Scicluna Well-Known Member

expendable Well-Known Member

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