Not Much Goin' On

I watched a spider crawl the wall,
and I expected him to fall
when he slipped and lost his step,
but he threw out a thread instead.

A single, silver, saving line,
and twisted on it for some time.

Then he resumed his sure advance,
inching 'cross the vast expanse.

Today I watched a spider crawl,
to him, the world,
to me, a wall.