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Old 11-07-2010, 02:54 PM
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davidm is offline
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I see what the OP is saying. I suppose it could be considered a plot whole.

Here's my explanation. From other things in the movies it appears that changes in the time line take "time" (very meta, I know) to percolate forward through the time line. Elderly Biff returned to the future he left and got there "before" the changes had percolated up the time line. If you'll recall, he appeared to be suffering, apparently as if he were about to disappear, similar to the way the subjects in the photo in the first movie disappeared slowly over time.

I know that doesn't make a lot of sense. Why wouldn't that whole version of the future be deteriorating rather than just Biff? But I think it's what the writers were trying to portray.

ETA: I see that Martin Hyde and I said pretty much the same thing.

Last edited by davidm; 11-07-2010 at 02:55 PM.