Actually since graphite is man-made does that mean graphite necks dont have dead spots?
According to Rob Green of Status Graphite: Carbon fiber necks do have dead spots, contrary to what a lot of marketing hype will tell you. The advantage to carbon fiber is that the resonant frequencies that will create dead spots are so much higher than with a wood neck bass, the spots usually occur well beyond (higher) than the playing range of the instrument.
This seems true for all of the carbon fiber necked instruments I've owned and played. That said, they're not perfect and I have played a Modulus VJ4 that had a dead spot in the typical Fender 6th fret of the G-string location.