some doubts with this film

Rating: 8/10 (8 June 2009)

I have never watched any Star Trek film and this is the first version I saw. I think it's great. What made me engrossed in is a lot, the visual effects, the twists and turns, the character development and the thought provoking exploration in human or other being's emotion and mentality. To me, navigating is a sublime and purified course as strolling amongst the clouds is romantic and inspiring though it's volatile at the same time. Recently, the plane of Air France disappeared on the Atlantic Ocean and over 200 people were killed in this accident. This tragedy reminds me of the novel, Vol de Nuit, written by a pilot who wrote the universally recognized Le Petit Prince and also mysteriously disappeared with the plane he piloted in an unknown accident. In this novel, the author describes the struggle and agony of the pilots and commander in storms and hurricane, implying that the sense of responsibility transcends liberty. It's admirable. This film impressed me with the same force. Be loyal to your cause, be firm to your own choice.
However, I still have some doubts with the plot. For example, when Jim was exiled to a planet covered with snow where he met Spark from the future, he was told that his father is proud of him because he is a captain. As Spark from the future world said, this future Spark is coming from the world 150 years later. So it follows that Jim and Jim's father are still alive in the world 150 years later, which means at least this two person can live as long as over 150 years????? Another question is that since two Spark can be existing in two different time zone, the wicked Nero shall also have another one in another world?????? Then, why we only see one Nero????? And why this Nero we saw in the film did not come to another Nero for assistance????? And ironically , this Nero was so lucky that he could go back to the past, why he failed to try to avoid the disaster to be occurred to his planet but take nonsense revenge??????
If the plot is reasonable and that's because I am not smart enough to understand, can anyone answer these questions for me?