1) John Cramer describes Woodward’s core thesis. *“Let’s consider the problem of reactionless propulsion first. Woodward extended the work of Sciama in investigating the origins of inertia in the framework of general relativity by consideration of time-dependent effects that occur when energy is in flow while an object is being accelerated. The result is surprising. It predicts large time-dependent variations in inertia, the tendency of matter to resist acceleration.”* This is the local tensor proper acceleration of the rest-massive test particle pushed off a timelike geodesic of the local curvature tensor field caused by real not fictitious forces. The fictitious forces appear to act on the test particle, but in reality they don’t. They describe real forces on the measuring device observing the test particle. The Levi-Civita connection in the mathematics of general relativity describes the real forces on the observing measuring apparatus not the test object being measured. *“The inertial transient effects predicted by the Sciama-Woodward calculations are unusual … in that they have G in the denominator, and dividing by a small number produces a large result.”* John Cramer definitely thinks that James Woodward’s inertial transient data is real *“convincing evidence,”* although it’s only *“tens of micronewton level thrusts delivered to a precision torsion balance.” *It’s important to understand that “thrusts” are not weightless warp drives free of time dilation relative to the clock-synchronized external observer left behind. Supposing best-case scenario, that Woodward’s effect is real and can be scaled up by many powers of ten. It’s still no good to get to the stars because of time dilation and the blueshifts of stuff in the way of the front of the starship. It would be good for airplanes and spacecraft on near solar system missions – if it really worked.