In addition to intense emotions, people with BPD experience emotional "lability" (changeability, or fluctuation). Grossarth emphasises their changeability through cognitive behavioral therapy in his intervention studies. Nova Scotia has frequent coastal fog and marked changeability of weather from day to day. The perfection of the sense drive would consist in maximizing changeability and maximizing extensity. In Autumn 1990, the band changed its name to Chameleon as a symbol of changeability. Another benefit may include ease of barrel changeability, as found on the Steyr AUG. I's changeability and was soon forced to leave.