EvC Forum is for debate on specific topics. In the science forums and in the religion forums, discussion is intended to take the form of debate on specific topics outlined in the opening post. Discussions in these forums are not conversations wandering from topic to topic. The way to change the subject is to propose a new thread over at Proposed New Topics.
For those who would like to discuss Peg's ideas on the origin and implications of written language, if someone would submit a topic proposal over at Proposed New Topics I will promote as quickly as I can.
For everyone else, this thread's topic is about the timing of the evolutionary origins of modern man.