27. "RE: A question on Dyson Spheres & UF"
In response to message #24
Warp is more popular than spacefold and hyperdrive because it's safer and (in comparison with spacefold) cheaper. It's hideously energy-intensive in comparison to hyperdrive, but a Warp drive failure leaves you careening toward your destination at a large fraction of c, whereas a hyperdrive failure has great odds of leaving you scattered across three solar systems. I imagine that most spacefold-capable ships we see in UF have warp drives as well; spacefold is great for getting to a known destination in a hurry, but it's useless for exploring.