I watched it. Their issue is that they assume that the gyroscope shows your relative orientation to a flat plane surface. It doesnt, it shows your relative position to the center of the earth. It would look like climbing if they kept a true straight heading. So their compensation that they think you would have to do is actually just the angle you would need to be the same elevation constantly.
I watched it. Their issue is that they assume that the gyroscope shows your relative orientation to a flat plane surface. It doesnt, it shows your relative position to the center of the earth. It would look like climbing if they kept a true straight heading. So their compensation that they think you would have to do is actually just the angle you would need to be the same elevation constantly.