When I started reading about evolution it really hit me that I had never really understood anything about the subject despite my thinking that I had been given lots of info via the society's publications. There are two massive misconceptions that are typical of most witnesses. Firstly, as already mentioned, that evolution relates to the emergence of life. Not true. That's the realm of abiogenesis. The second is that there is one "theory" of evolution. Natural selection is the prime, but just one, component of how life progressed.
The ignorance of witnesses in this area is shocking but not surprising. If the society actually educated people about the subject or gave people an honest representaion of evolutionary science on subjects such as the development of the eye or cooperation and interdependencies between organisms, then they would risk people actually starting to accept science instead of the emotional assertions of the society.
The one area I still find difficult to discuss with witnesses is faith and belief in science. Once you understand the scientific method and the difference between theory and hypothesis it's easy to see there is no believe and faith, just acceptance. For a witness however they are still conditioned to say that you have to have faith that a scientific position is true, for example so called assumptions about intermediaries or theories about feathers on dinosaurs.
The acceptance of natural selection does not remove the existence of a creator and designer but it does very much reduce the need.
