Complex symbiosis between parasite and host. This cannot have developed step by step, and I don't believe in a meddling God who steps in and arranges partners for the dance. > > http://www.guardian.co.uk/science/2010/aug/18/zombie-carpenter-ant-fungus > > Is the epigentic mechanism so complex, the process can be manipulated to this degree? Any suggestions?- I don't see any reason why this type of situation cannot evolve step by step. There are a lot of similar interactions between fungi and ants and other creatures, as shown in this David Attenborough clip:-http://www.youtube.com/watch?v=XuKjBIBBAL8&feature=fvw-He says at the end that any species that grows too dominant is likely to develop its own cordyceps fungus - so maybe we humans had better watch out too! - but maybe in our case it will be some form of virus.-This is surely a good argument against any form of intelligent design, including DT's curious variety.