My friend asked me, "Why don't you publish it on your blog?"
"I don't want people to think I am crazy", I replied.
"If it sounded crazy, I would tell you so. But it seems very logical to me".
"Well then, I will publish it someday".
That was the conversation I had with one of my closest friends. Apparently when I proposed him the idea, being a huge cricket fan, he wanted to play cricket with his other self from the parallel universe immediately. He wanted to bowl to his other self, and knowing that the other him would be thinking the same way, would he be able to guess his bowling trick and defend the ball accordingly?
Nice idea, but I couldn't comment on the plausibility of the situation.
Can I make a tunnel between the parallel universe's' (note universeS: many of them)? I don't know the answer, Stephen Hawking will answer you that.
Let's make things simple.
How the hell it is possible that a parallel universe exists?
Before I answer this, I will give you a scenario.
Human ears can hear sounds which have a frequency range between 20 Hz to 20000 Hz. Any sound below 20 or beyond 20000 is not audible for the human ears. But dogs can hear sounds which have frequencies more than 20K. So the concept that humans cannot hear anything more than 20K doesn't mean that sounds beyond 20K don't exist. Human senses just cannot feel them.
So far we know of only 4 dimensions. Initially we knew only 3 dimensions. That were height, width and depth. Later Einstein brought in the idea of a 4th dimension and that is time. In recent times 6 more dimensions have been discovered but human senses cannot feel (check this link) them. So the inability of human senses to detect them does not prove that things beyond these 4 dimensions cannot exist. If things go on according to the properties of the other six dimensions, events will take place, but humans will not be able to sense them. So even if a parallel universe exists in those dimensions, we won't feel a thing (but here a paradox occurs, if two objects can simultaneously occupy one single space; answer is NO; they need to have different space-TIME coordinates). But that in no way proves that a parallel universe cannot exist.
The things that we can observe depend a lot on the sense of our time. If you take the speed of electrons revolving inside an atom, that will serve as the base of all our observation with respect to time. All the things that we see around us have shapes and meanings to us because our senses have grown to understand things which have properties co-related to the speed of electrons.
If in another universe, the quark (the building block of electrons) have different properties (I cannot explain what), that will affect the speed to electrons, therefore the whole universe will have a different sense of time. And all the creations in that universe will be defined by that. The molecular structure, the speed of light (isn't it highly ambitious?), the sense of time will be different there. I believe even Einstein's famous equation of mass-energy will be multiplied by some deviation factor to be accurate or will have a totally different form.
Hence, we cannot ever reject the idea of a parallel universe. May be we are too dumb to sense it.
Is it possible to exchange things between universes?
May be. But if that happens I believe that will have to follow the law of conservation of energy. The total energy (hence mass) in an universe should be unaltered.
Stephen Hawking once said, if you see a stranger through your door hole, let him in. He might be your great great great grandson traveling back in time.
I say the same thing adding a few more words inside parenthesis (at your own risk!).
However, many scientists oppose the idea of traveling back in time because of the feedback problem. More on that in another post. Till then keep on thinking about this post.
Disclaimer: I am not a scientist. The ideas proposed above are purely mine and shouldn't be taken as references. They might be totally wrong. Accepting them or rejecting them depends totally on you. I suggest you not to accept them; instead, think about them. If you find anything different, let me know and let the world know so that everyone can learn something new.