how do you know it's not a sign?

I'm searching for the words That nobody's ever heard I feel 'em in my throat Must I trust them all I know where they've been Beyond this world I'm in Every sailor needs a boat And a cannonball I'll wait another beat Maybe this one will repeat-peat-peat Don't worry 'bout the notes Let it take control 'Cause none of this is real I'm squirming like an eel Under a heavy coat Of what's possible I'm growing out my hair 'Cause Virgin Galactic shares Have doubled what they're worth Since I checked last fall As far as I can tell There's nine levels to hell We're only on level one Where's that cannonball How do you know it's not a sign How do you know it's not a sign How do you know it's not a sign A cloud becomes a face To save the human race Maybe it's just the wind Pushing gas around But what does it mean to me? How much am I to see If my breath is just the wind Pushing gas around? How do you know it's not a