traveling in time...

traveling in time has always been a wonderful concept to think of and imagine about. was discussing about it with my wife, manisha and we were thinking how can one just keep track of what happened in past (leave apart future). a point to be noted would be that, since as of now we don't record events happening in the world, so there can't be a point of return too! we need to, like in the video games, save the state of the world, so that we can travel back (somehow) and reload the scenario and re-live it using our present state. ultimately, if we start saving, recording or whatever one wants to call it, the present state of the world, we can expect a way to return back. is it possible? seems wierd, but ya, it is. the whole thought is freaking cool, but when and how exactly can it be realized will be a big question!