Last night I watched the Star Trek compilation of time travel stories. I love and always have loved stories about time travel. Just going back or forward in time is interesting, but having wierd causality is my favorite.
So what are my favorite stories across all the different series? Usually, my favorite involve a strange twist on our usual notion of causality, something I call "extraordinary causality".
Quantum Leap: A Leap For LisaWhen Sam leaps into a younger version of Al and changes things so that Al gets the death penalty in the past and so is replaced by another person playing the hologram, I get chills. The idea of extraordinary causality has always been a favorite of mine to think about. Probably not true, but still very cool.
Star Trek TNG: Cause and EffectThe Enterprise is destroyed again and again in a time loop. The whole time loop/de ja vu thing is very cool. The whole de ja vu thing might be a little contrived, but still very compelling. There are a
lot of time loop (or as Doctor Who calls them "Chronic Historesis") stories, but I think this is my favorite. I also like the Frasier was the captain on the other ship.
FrequencyAgain, the whole crazy/cool notion of extraordinary causality is fascinating and very compelling. I love the final big scene where all the furniture changes and his Dad is alive to save him. Very nice.
Star Trek TNG: Yesterday's EnterpriseThe shifting the reality to one where the Federation is at war with the Klingon empire and losing is pretty interesting. It's interesting that Guinan was able to remember, on an intuitive level, the original temporal event sequence. Later it sort of makes sense (in a strange way) with the fact that Guinan once lived in the nexus from Star Trek, Generations. The Tasha Yar story was quite nice, especially since it had interesting repercussions (a daughter) later in the series. Although, It's funny that the genetics of a black haired Romulan father and a blonde Human mother having a blonde daughter bothers me more than the genetics of two completely alien species having a child.
Buffy the Vampire Slayer: The WishNot so much time travel as an alternate time line. It has what I need for an alternative time line: impact on the main time line. Not only did it remove Anya's powers, but evil vampire Willow was very funny and very cool. This was not only a great foreshadow of evil Willow, but to a prelude to lesbian Willow (although saying that way bothers me for some reason). Having her cross over into the ordinary Buffy universe in Dopplegangland was an awesome idea. I got some serious chills when Buffy and the Master were in battle fighting insignificant others on their way towards each other, fighting, Buffy dying and then Giles smashing Anya's pendant.
Angel: Time BombTime becomes fractured because of Illyria's powers and the addition of Angel into the distortion somehow allows Illyria to break out of the fractured time loop being deterministic was very interesting. It goes to show that if you die in a science fiction story, you should make sure that you do so near a temporal anomaly. That way people, including yourself, might be able to save you.
Bill and Ted's Excellent AdventureThis story is stupid, but enjoyable. The best element was the idea that you could remember to set something up later, which in this case would happen earlier and help yourself out. The foreshadowing (if you could call it that) of the circular logic used in how they are going to get a band together was very cute.
The Outer Limits: A Stitch in TimeThe Outer Limits is sometimes disappointing. There seems to be a tendancy to use the Frankenstein's monster story over and over again. It smacks of anti-intellectualism to me. This episode, however, I think is one of the best. The idea of an assassin traveling back in time to kill serial killers before their first victim has tremendous appeal.
Minority ReportAgain, no actually time travel, but extraordinary causality. The scene in the mall has to be my favorite. The whole idea that if you had a real psychic (not just someone suffering from a really bad case of confirmation bias, wishful thinking and selective memory) that could predict the future is tremendously interesting.
Doctor Who: Father's DayThe new Doctor Who series is tremendous. It's as well written as the Tom Baker years and it actually has good special effects and bit part actors. Father's day had some interesting elements that are usually avoided because they are violations of "the laws of time". I think "laws" in this case is more legal than physical law, since the violation is possible, just generally a really bad idea.
Some more thoughtsI feel cheated by alternate timelines stories when they have no impact on the original. I had a problem with the in-a-mirror-darkly universe stories in the last season of Enterprise because of that lack of impact. I like nice story arcs. That's why I love everything done by Joss Whedon.
That's why I liked Babylon 5, it had some nice, big story arcs. The whole mystery of the missing Babylon 4 which turned out to be stolen by themselves was pretty cool. But now that I'm spoiled by Joss Whedon's excellent writing, it's a bit hard to watch Babylon 5. The dialogue in B-5 comes across as stilted. It's like everyone is trying to make a grand speech all the time. "All the time" might be a little harsh, but only a little.
I miss Buffy, the Vampire Slayer. I miss it a lot. At least there's Veronica Mars to tide me over until the next Joss Whedon project, whatever it may be (Wonder Woman?).
The only thing in reality that I find similarly interesting as scifi extraordinary causality is the mind-blowing quantum experiments that are done in the field of quantum optics. Once you understand the Sten-Gerlach experiment, the EPR experiment is just bizarre. The which-way experiment is completely dizzying. The double slit experiment itself, especially the Feynman Lectures on physics description of it is simply amazing.
Someday I'll work out a nice way to describe how completely bizzare quantum optics are to a non-technical audience. I tried to present it to my Science and Nonsense class last semester, but to no avail.