Okay, we are back on this topic now... we know that our previous approaches led us nowhere. Having said that let's start our discussion with another example.
You are traveling by a train from East, say from station A, to West, say to station B (While traveling from the Past to Future, Present is always a pointer to the current instant and so let's ignore it). Now, there is another train coming from West to East and both trains stop at stations A and B side by side. Now you reach a station B where you get down and catch the other train! Of course now you are traveling towards to East, station A, that means you are traveling in the opposite direction.
You haven't reached the destination yet. You are still traveling towards to station A. Let's say that once you reach station A, you want to restart your journey all over again! So, you reach that station and jump on to the other train which goes from East to West. So, now you are in the same train where you were traveling before, from East to West. So, here is what happened.
(East) Station A -> Train travels from East to West -> West (Station B)
-> (Change the side) ->
(West) Station B -> Train travels from West to East -> East (Station A)
For people who live in Metro cities and travel by train everyday, this example might be 50% of their daily life. Though it is a simple example, it can help us to understand 'Time travel' in a better way. Now, let's redefine this example in terms of 'Time travel'.
A man starts his life from 2000AD towards to 2075AD (say he lives for 75 years). Once he reaches 2075AD, he wants to travel back to 2000AD to restart his life. In order for this to happen, we need two stations (as we saw in above example), station A & station B. These stations are his starting and end points but apart from this, what do you think about what makes these stations important or special?
I know that you are smart! Yes, you got it. The trains 'meet' at these stations. We need these stations or junctions to catch trains which travel in different directions. Similarly we need such ports or point of contacts which connect the two 'relative time tracks' which run on the Earth. Otherwise, it's not possible to travel to the Past and back to the Future! Consequently this leads us to few more questions, isn't it?
What about the point of contacts which connect different time tracks? How do they do it? We all know that there is a time track in this universe, running forward (in one direction) all the time and we travel on it, but what about the parallel track which, theoretically, seems capable of taking us to the Past if we can jump on it? Think through it.. I will be right back with my next post.
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