I knew that you shouldn't hit your brakes in a turn, because you either have traction to brake or to grip the road, but not necessarily both at the same time.
What I didn't know before today is that this is called the "Traction Circle":
Speaking of cycling, gorgeous bike ride into work today, even found a little dirt shortcut that shaves about a mile off the usual route. Unfortunately, I will never ever get used to the headwind on the way home. Just. No.