When that happens, it's a clock. It's nature's clock, and we...

When that happens, it's a clock. It's nature's clock, and we are able to predict tide levels based on what we record today. Today, as I speak, right in front of me there's a construction crew. I'm looking out the window and they're driving pilings and pouring concrete for a dock. You would hope the engineers knew just how high the highest tide would be there.