I've always thought that SW never really delved into the science behind how life really works. How does a repulsor work? Objects that hover take a LOT of energy to maintain, at least here on earth. Surely not everything needs to powered by repulsor. Why do we not see wheeled traffic? The wheel is one of the oldest tools known, surely the ancient dwellers of the deep core would have discovered this. Why is almost everything powered by rocket engines? Again, rockets are terribly inefficient; there is a reason that we use turbojet technology for our inter-atmospheric flight. If you want to move goods or people from A to B on one planet, an airfoil is a MUCH cheaper way to accomplish it rather than rockets and repulsors. I think we need more 'science' in our EU.