Need a Nail?

An old proverb illustrates the fascinating concept of the Butterfly Effect beautifully:

For want of a nail the shoe was lost.
For want of a shoe the horse was lost.
For want of a horse the rider was lost.
For want of a rider the battle was lost.
For want of a battle the kingdom was lost.
And all for the want of a horseshoe nail.


It's mind-boggling how every action (even missing a simple nail) could have such a profound impact. I wonder how the next word I type could change the course of history.

Walrus.

Hmm, maybe not every action is profound. Still, the mere potential for profundity makes me... curious.