This is a difficult topic indeed...
Personally, I'm agnostic, so I prefer to believe in evolution, but I can see why some people have problems with it...
In my opinion, I would start discussing about it, and even if it's just to find out when exactly he thinks happend... The number of people that still think good just made the human from nothing should be close to 0, esp. considering that even most churches don't believe that any more...
But if he just thinks that the "evolution" was guided along the right path by god, then I think that that is an acceptable stance...
Saying there is prove of evolution is always difficult, cause there always will be arguments like "why are there apes and humans but nothing in between right now" or "what are the chances of evolution really leading to the human"...
Hm, but to be honest, I've never met anyone that did not believe in evolution... but i guess creationists are something like root beer... somehow you only get them in america and most foreigner can't handle it
