Thought of the day - getting off topic~

Time flies... especially when u r busy, preparing for exam, playing, or even sleeping.
I always hear people saying how time passes so fast.. n to an extent, i do agree on tat. I may have said tis b4, i still remember when one day on the way to school, i started to think :
"How long would have passed in the future when i think back what is happening now?"
The answer for me now is 2 years + few months.
It does give a rather nostalgic feeling, especially when you are reminded of how fast the time is going about, it is like someone rushing you saying :
"Hey, time is running out, whatever you want, do it quick!"
Perhaps it is juz me, but i am still getting the feeling tat i havnt achieved anything in my life. I feel tat all i did was juz as playing a supporting role in another person's life. I know i want to achieve something, but i certainly isn't goin to achieve anything juz by thinking about it. Life is not like a book someone is writing, you may decide what u r going to do next, but u certainly cant guarantee tat wat will emerge in your life as a result of wat u've done is satisfactory to u.
It's juz like i wanted to bring team SJI to the state comp and bring the glory back. Well i did bring the team to the competition, but i did not bring back anything, the outcome isnt something you can decide juz like tat. You may put in a lot of effort juz to do something, but tat doesnt mean tat you are certain to achieve what u wan, it's juz like putting targets on a shooting field, putting more targets will give you a higher probability to hit a target, but the fact is there tat you may nvr hit one by chance.

Let's get over wit tat and continue on with the topic i discussed wit CT today~
It's something regarding time travel, childish? impossible? who cares.
You see, people had been saying abt time travel and changing of history, i hope tat a method for time travel will be discovered but i feel tat alterations to the history will be harder to achieve though...
Here's what i think:
Lets say that on 1st January 2009, you injured your leg bcoz u got ran over by a car.
On 1st February 2009, you decided to travel in time to the past, to prevent yourself from getting run over by the car and returned to the moment after u travelled back in time.
Now think, if you succeeded in preventing the accident from happening, tat means, the injury did not happen, which means tat between the period of 1st January 2009 and 1st February 2009, you wouldn't have got a reason to travel back in time.
When the history is altered and your leg wasn't injured, tat means, you do not have to return to the past.
However, if between tat period of time, you did not actually return back in time, tat means the history will not be altered, which means tat the accident will actually happen.
Sounds complicated?

Tat made CT give up thinking of wat i said, and i was actually having a hard time trying to explain to him so i doubt if it is easy to understand using writings.

There's another thing tat i heard from Willey which is the Many-worlds interpretation
This is not exactly wat the thing suggests but i guess i will juz put wat i can understand:
Like the case juz now, u injured your leg, but tis time with a little details added.
A - You injured your legs on 1st january 2009
B- 8.00am 1st february you travelled back in time to 1st january (A)and prevented the accident from happening
C- You returned in time to 8.01am 1st february 2009
From wat i understand, if u alter the history which is changing (A), the condition in (C) will experience some changes.
However, in this case, the change u made will result in difference in the current time.
If you did (B) after (A), the changes will happen, which results in (C), however, since u changed (A) during (B), it means tat (C) will not be parallel with (A) in time.
It's something like, when u change the history of your injury, you are actually chaning the course of the time u r currently at, which means something like tis

--> [No alteration is done]--> (C)Your leg is still injured - (O)
O -->(A)-[leg got injured] '
'--> (B)-[ (A) is avoided] -->(C) Your leg did not get injured - (2)

tis way, it means tat in the dimension O, which is the original dimension, your leg got injured, when you did not do any alteration to the timeline, you will be kept in the same dimension following the timeline. However, if alteration (B) is done, wat will happen is tat, since condition (A) is avoided, then tat means you cannot be following timeline of dimension (O) since ur leg is not injured. So, according to the theory, when alteration is done, you will actually move to another dimension which the injury did not happen which is (2)

Looks easy but this is but a tiny part of the whole theory, took some time to really understand this little part though. You think you can understand the whole theory?
Go ahead : [ http://en.wikipedia.org/wiki/Many-worlds_interpretation ]