Butterfly Effect

Yes I know the film is old, but I have just managed to watch it recently for the first time ^_^;;

'It has been said that something as small as the flutter of a butterfly's wing can ultimately cause a typhoon half way around the world.'

But how does this link in with the film?? There seems to be a gap missing and I cannot see the parallel association. Is it the interpretation of the chaos theory in the 4th dimension? Such that if one human being interfere with a minute factor of its life he can actually alter the grand history.

Very interesting film. When time is brought into the equation, it's always interesting. Or so I think.