The dark sequences can be random.
For a whale of a good time, you'll need full tea power.
With tea for a Brownian motion source, you can pick your destination!
No sight? Then it's Country Lane as Ford, or the Speedboat as Zaphod.
No hearing? Then it's the Heart of Gold, or the War Chamber.
No smell? Then it's the Vogon Hold, or the Beast's Lair.