Young's Modulus

Forbes argues that spacetime's Young's modulus falls as gravitational-wave frequency rises, so high-frequency manipulation would need far less energy and could move an aircraft without forming a black hole. The published relation runs the other way. Y is approximately pi c^2 f^2 / 4G, so stiffness scales with the square of the frequency and rises as frequency goes up, which makes high-frequency manipulation harder rather than easier.