Cynefin offers five decision-making contexts or "domains": clear, complicated, complex, chaotic, and a centre of confusion.[lower-alpha 4] The domain names have changed over the years. Kurtz and Snowden (2003) called them known, knowable, complex, and chaotic.[1] Snowden and Boone (2007) changed known and knowable to simple and complicated.[lower-alpha 1] From 2014 Snowden used obvious in place of simple, and is now using the term clear[6]