On Feb 5, 5:38 am, Mxsmanic wrote:
A GPS unit doesn't know if you're coordinated. And if your track _is_
changing, it doesn't know why.

[Disclaimer: the following post is for the purpose of clarification
to the greater aviation community. I realize that arguing with this
delta alpha is a complete waste of time.]

Your statement does not make sense. Of course the GPS does not know
if you're coordinated. I doesn't need to. You can see the ball
yourself. If the ball is caged, and your ground track is changing,
you are by definition in a bank. End of story.