Ghost in the Machine ~ Acceleration is the 2nd derivative of displacement. Acceleration is the rate of change of velocity. ~ Abbey stared out the window at the torrential rain that pummeled Sylvain’s small cabin west of Coventry. Farley sat beside her and let out low whines every few minutes, as if she might have forgotten that he was there and had not yet been walked. Caleb, evidently not nearly as gloomy as Abbey about missing school again this week, sat on the couch staring at his phone. Mark typed away on his computer at the desk in the corner, no doubt researching isogons, maps of constant magnetic declination, which he had told Abbey about rather relentlessly over lunch. Sylvain busied himself with dinner preparations in the elegant country kitchen; the cabin, while small, was extremely well appointed. “Well, I guess I’m just going to have to walk you by myself, then,” Abbey said loudly to Farley. “Have fun,” Caleb said.