I'll open my first post with my favorite song lyrics:
We are frail, we are fearfully and wonderfully made,
Forged in the fires of human passion,
Choking on the fumes of selfish rage.
And with these, our hells and our heavens, so few inches apart,
We must be awfully small
And not as strong as we think we are.
With all due respect to Rich's insight, right now I think there is perhaps no greater indication of how small and weak humans really are than how much our perception of a situation can change based on a little stress or a single night's sleep. Maybe I'll post again in the morning.