"For anyone deluded enough to remain down at sea level, there must come a moment when he finds himself looking upward at the Crests approaching."
This sentence is not about waves. It's classic Pynchon telling us dummies to get our heads out of the sand and look around. To question everything. To see the hidden power structure behind the seemingly random events of the world. And then to see even deeper to the hidden power behind the power. And on and on.
"If they can get you asking the wrong questions, they don't have to worry about the answers."
Look up and see the coming waves before it's too late!
Trust no one!
Open your eyes, sheeple.
Etc, etc.