What does Ayu mean in Duty...?

[Chiharo]

Okay,so these lyrics confuse me.
Does anyone knows what Ayu means by:

"Everyone is convinced
that that "thing" they're searching
for is in the future.
But how many people have realized
that "it" is actually in the past?
I can't even guess."


"If, after simplifying it
a bit more, you think that "it"
merely connects and arranges memories,
then wouldn't everyone
already have "it?"
I want you to realize that."


Now,what does Ayu mean by this?
What does she mean by "it"??
Sorry if this is an useless thread,but I wa really
wondering since it's really bothering me if I don't
understand what is Ayu trying to tell me