“There’s a point at 7000 RPM… where everything fades.  The machine becomes weightless.  Just disappears.  And all that’s left is a body moving through space and time.  7000 RPM.  That’s where you meet it.  You feel it coming.  It creeps up on you, close in your ear.  Asks you a question.  The only question that matters.  Who are you?”  –Carroll …