Originally Posted by aoeuhtns

Rekna, I'm probably missing something here, so just correct me if I'm wrong.

But don't you need to determine the total distance to figure out the gravitational force? I mean, if X1 and X2 are really close, but Y1,Z1 and Y2,Z2 are really far apart, the X force shouldn't be huge, should it? Because if the distance is huge, all the forces are going to be small, no matter how close some of the coordinates are.

Of course, I could be totally wrong, but at first and second glance, I'm just not seeing how that would produce accurate results.