This reporter (like many) doesn't entirely understand what she's reporting. She's regurgitating and trying to make sense out of it.
Food for thought: (because I read, researched and understand a bit of what's being said on the source blog)
1. The law of conservation of energy is not being violated. The microwaves are not pushing on the inside to make it go in any direction. The real fun is in quantum mechanics. QM states a law of conservation of information. It's similar, just know that information cannot be deleted in the same way it cannot be cloned.A stronger version of the no-cloning theorem and the no-deleting theorem provide permanence to quantum information. To create a copy one must import the information from some part of the universe and to delete a state one needs to export it to another part of the universe where it will continue to exist.
Therefore, inside the drive, information is created in an open time-like curve. The information states that the microwaves are in motion toward the back. However, the microwaves reflect and say they are still in motion to the back, despite going forward, because another wave maintains direction without prior knowledge of the first wave's reflection. So the waves share information and the first reflects again, joining the next unaware wave as they cross the second wave. Each successive wave is a frame of reference that thinks they are going faster and faster, but are the same first wave.
They have not cloned. They have become entangled. However, each successive wave becomes stronger and louder, like ocean waves crashing against a sea wall. The universe is aware that the microwaves say they are in motion in only one direction. So, the information is being conveyed, cannot be deleted, and the universe says energy cannot be destroyed and momentum must be conserved, which would result in a paradox, so the universe says, "oh, you're moving... OK." The thruster then moves because the universe has to move it - the universe is a closed time-like curve.
2. It's similar to a warp bubble, but it isn't a warp drive. The warping of spacetime is isolated to the interior of the drive. It's being caused by frame dragging.http://simple.m.wikipedia.org/wiki/Frame-dragging
Frame dragging is what happens to matter, big examines like planetary and stellar cores, and more notably black holes or small examples like spinning particles that slow down over time and align with bigger spinning objects. General relativity states that dense matter warps spacetime. Not to be confused with a warp drive (which also warps spacetime), frame dragging states:Since the energy absorbed by spacetime has to go somewhere, many scientists predict that spacetime would be "bunched up," or folded. This can also be phrased as a curvature (bend) in spacetime. This would indicate that the particle generated gravity. The reason that this theory is called "frame dragging" is probably due to the effect of particles effectively "dragging" or "grabbing" spacetime as they spin. Not only would space be curved, but time would as well.
This explains the inferometer readings. The interference pattern is similar because it's the predicted result of frame dragging as described by the warp field equations for doing a similar process. The difference is this: You can move a car with a jet engine, but you can really move a car inside a jet.
3. The test success only is a step, it doesn't prove more than the drive is working. How it's working is still being investigated. It may not be violating physics, but it may be capitalizing on yet unknown physical laws or some medium we cannot detect currently.
4. If it does really work, one drive is not the end all. These test models are very small. Their power increases with size. Yet, there is a law of diminishing returns once you get too big. Nothing stops you from strapping on multiple thrusters for a combined effect, except cooling and energy generating mass. You still have to fuel the thruster and it generates a lot of heat.
5. It's more am inertial dampener than warp drive in energy generation mode. When in this mode, motion is converted back to energy. It's not efficient, but it will generate electricity in exchange for slowing the thruster down. This is two principles: Conservation of Momentum and Frame Dragging.
6. The warp drive projects a bubble around a ship, formed to generate a wave of gravity that the ship rides in like a car. The universe sees the tilt in gravity and moves the spacetime bubble, not the ship. The warp drive creates a closed time-like curve. This is opposite the EmDrive. Inside a warp bubble, time flows at the same rate as the starting point. Now that I think of it, that would explain the concern of operating a warp drive inside a deep gravity well. Not only would making the bubble prove difficult, you would carry that frame of reference until you stopped and started again.http://m.phys.org/news/2013-02-spacetime-violate-heisenberg-uncertainty-principle.html
Example: You're in a well of 7:1 (watch interstellar to get the reference) where 7 years pass for every one year in your perspective. If you leave Earth seven years ago without stopping and stop in such a well, only seven years has passed. If you turn around right away and leave the well to return to Earth without stopping, 56 years will have passed on Earth but you thought you only were gone for 14 years. Conversely, if you went from Earth to another 1:1 gravity well seven years away, turned around and came home, 14 years would have passed for you and on Earth.
This has to do with general relativity. It's also probably a better explanation as to why the warp drive doesn't violate causality.
We're getting there, but let's keep the cray cray down to a manageable level, OK? Keep calm and stay rational. I could even be wrong.