Emergence signifies a kind change.
There seem to be three important kinds of change considered possible in modern metaphysical discussion. First, there is chance occurrence, the assertion of a cosmic irregularity, an occurrence about which no law could be stated. Thirdly, there is emergence, which is a cumulative change, a change in which certain characteristics supervene upon other characteristics, these characteristics being adequate to explain the occurrence on their level. The important points here are first, that in discussing emergence we are not discussing the possibility of cosmic chance. The emergent evolutionists admit a thorough-going regularity in nature.