Your RBR Word of the Day: labile

labile \LAY-byl\, adjective:
1. Open to change; apt or likely to change; adaptable.
2. Constantly or readily undergoing chemical, physical, or biological change or breakdown; unstable.

Considering Joe Pendry's view on the importance of labile o-line groupings, there's no way to tell if the line we see on Saturday will even remotely resemble the line we see in September.