Here’s my retcon. The science of inertial dampeners are such that you have to be precisely aligned perpendicular to galactic north for maximum effectiveness.
This isn’t entirely unreasonable to determine, since the galaxy is a big disk and you could map that as a 2D plane. For the most part, ships are traveling across the plane between planets, in the same way that a ship flying from Earth to the Moon or Earth to Mars would be flying through a plane perpendicular to the two bodies. Not a lot to visit above or below the plane, and the shortest distance would be between two points, so…
Here’s my retcon. The science of inertial dampeners are such that you have to be precisely aligned perpendicular to galactic north for maximum effectiveness.
This isn’t entirely unreasonable to determine, since the galaxy is a big disk and you could map that as a 2D plane. For the most part, ships are traveling across the plane between planets, in the same way that a ship flying from Earth to the Moon or Earth to Mars would be flying through a plane perpendicular to the two bodies. Not a lot to visit above or below the plane, and the shortest distance would be between two points, so…