lots of variable

well bro....life is full with variables...(now im talking math :))....
in a large calculation...u can find it in your calculus books in college...(back to future)
in one problem u can find several variable....all variable must be calculated to get the exact answer.

bro
even though, sometimes variables can be ignored.you will not get the exact answer....but the answer u get is still meaningful...meaningful to u