Theory of naught

How to make sound,
that remembers the ears.
How to word noise,
that shows us the tears.

If we climb fast,
like a tree do we fall?
Will someone hear us,
be us big or just small?

"I think for sure,"
the scientists' say,
for if we die,
those close will dismay...

For finding new sound,
a tree is exploring,
growing anew many,
thriving not mourning.

If we have seen,
nothing and all;
can not we say,
there's potential in falls?