now how a man who works  on  can think there's anything funny about species i just can't understand erm but there it is. erm well, suppose, however, that in my view wrongly one did suppose that there was something erm in this sort of idea of the decoupling between the processes which we observed in single populations and erm the sort of mechanisms leading to large scale evolution, what kinds of processes are held to be important when it comes to large scale evolution events?