Understanding

I know that what I'm writing now
I don't know why I'm here

I know that smoking is bad 4 health
I don't know 2 enjoy the fund of smoking

I know that the "who" & "what"
I don't know "why" & "how"

Everything has 2 sides
When we though we understand it
But
When we look at the other angle
It may not be so obvious
In the end they know
Or juz pretend 2 know
It depend on the person
U understand what u know?!
4 u
Is juz a simple formula
Or can really understand some of the meaning?!