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Is Data's head still under San Francisco?

^No. But there has to be an original timeline where Data's head wasn't there.

Probably. But I'm pretty sure Trek as we know it doesn't exist in that timeline.

The problem with that theory is that the only reason they ended up in SF was because of that head. If they never found the head in the 24th Century, they would have gone on their happy journey instead of being called back to Earth.

I viewed that episode as an absolutely closed loop, like the original Terminator. There was no 'original' timeline.
 
That's not how some of us believe it works, as we tried to explain multiple times (pardon the phrasing)... You can't travel into your own past, you can only travel into the past of an alternate timeline.

Timeline A - Data's head isn't there, Picard and Guinan meet somehow, events transpire to lead the TNG crew to SF in the past. As far as the rest of this timeline is concerned those folks never reappear.
Timeline B - TNG as we know it. Data's head is there because Data and others from timeline A crossed into the past of this timeline. Once this timeline reaches the point of Time's Arrow, the TNG folks will go into timeline C, etc...

Of course the root problem with this particular situation is that it technically is a paradox and shouldn't exist in the first place. My understanding is that even most of those who believe time travel is possible don't believe that you can create a situation where something happens because it already happened.

I'm rather tired right now, so I regrettably may have botched things a bit in explaining it this time. But in an alternate timeline I got it right!

You may be right in more than one timeline - in an infinite multiverse maybe there are some with Trek laws of physics!

I think the closed loop theory does exist and travelling back to an alternate reality theory is the many worlds 1 theory. People advocating original Data Prime's head being in NuTrek seem to be advocating branching theory where the alternate timeline does not exist and is actually generated by the time travel event only from the moment of arrival so that both timelines share the same past prior to that moment. It's possible that they are saying that ONLY time travel events create alternate timelines otherwise mundane events would be creating near infinite timelines every second.

I haven't been able to locate any scientific support for the third theory but even if there is, I suspect that even those scientists would view the branching option as incompatible with time travel theory because it could create a time travel bottleneck. I have yet to see any theory to explain how a universe can be created without the energy of a big bang and what that would mean for gravity if it is indeed shared across dimensions. Pre-existing plurality makes more sense.

Putting aside those conerns, if the new timeline is duplicating everybody and everthing in the entire universe somehow, that would include Data Prime's head. Since the head is not found in the prime universe until after the split, the head can be duplicated along with everybody else. I can see how a logical progression can lead you there and dodgy science has been used in Trek from day one. If in the Trek Universe a warp speed supernova and a singularity can defy the laws of physics (allowing communications and light to escape its event horizon) why not screw with time travel too - those are far less categorical theories that some of the laws of physics that have been molested!

I stand by my original statement though. Many worlds theory sucks. Branching theory sucks worse. Give me a nice, neat predestination paradox any day.
 
This is exactly why Time travel in Hollywood does not work because of all the endless paradoxes

In sicence it works very much differently then the Sci-Fi shows like Star Trek which always gets it wrong

but good question though, is Data's head still there well the answer is YES & NO or better way of saying it = Infinity
 
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^No. But there has to be an original timeline where Data's head wasn't there.

Probably. But I'm pretty sure Trek as we know it doesn't exist in that timeline.

The problem with that theory is that the only reason they ended up in SF was because of that head. If they never found the head in the 24th Century, they would have gone on their happy journey instead of being called back to Earth.

So is it Schrodinger's Head?
 
I viewed that episode as an absolutely closed loop, like the original Terminator. There was no 'original' timeline.

It kind of makes you wonder how the whole thing came to be. Could we say it was due to the meddling of certain powerful beings or aliens with control of time?

Pauln6 said:
I stand by my original statement though. Many worlds theory sucks. Branching theory sucks worse. Give me a nice, neat predestination paradox any day.

It is conceivable that some would view a situation without paradox as being superior to a paradox; in other words, paradoxes suck ( though they seem to lend themselves to time travel drama ). Other unhelpful things about single-timeline include the "Schrodinger's Cat" effect, or in other words, why should Picard be relegated to a quantum state of existence when he observes someone else going back in time?
 
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"My advice in making sense of temporal paradoxes is simple: Don't even try..." Capt. Janeway, Timeless.
 
Does it really matter whether Data's head is still under San Francisco?

It's just the latest thing to nitpick about.

Next week it'll be the color of the toilet paper in Scotty's bathroom.
I daresay the potential screen reappearance of one of Trek's most beloved characters ranks a good bit higher in importance (insofar as anything about a fictional series of stories is "important") than something that never entered canon in the first place. Besides, they're in the future - they don't need toilet paper because they use the three seashells, remember? ;)
 
No it's not in the cave. There is only one timeline. The head they find in the cave is the same head they left in the cave it's just older.
 
No it's not in the cave. There is only one timeline.

According to the writers, the Abramsverse is a branching timeline. According to STO, the Prime timeline goes on after the destruction of Romulus and the departure of Spock and Nero. However, even if there were "only one timeline", it wouldn't matter. Data's head would still be there. Assuming there is "only one timeline", the Prime timeline had Data's head there between 1893 and 2368, which includes 2233, so when Nero goes back to 2233, the head is there.
 
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Heh, I guess the original question should have specified what form of multiverse theory we should be operating under.
 
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