Random thought of the day!

I had this 'vision' yesterday that something happened to our planet and all of us died except for a few. Due to the catastrophe those few survivors were forced to go back to the primitive ways of our ancestors to get by and to keep on surviving. So i thought to myself...
What if those few survivors had kids and so on and so forth and in hundreds of thousands of years they would have developed into  a futuristic type of civilizations and they would eventually have forgotten about us and the way we used to live. What if they started digging around to excavate our bodies like we do to our ancestors and to those that used to live here in a time before us? Would they think that they are smarter than we were in our time? (I am not a Darwinian so lets just ignore the evolution theory.) Since we always seem to forget the fact of how 'privileged' we are to have been born into a time of lets say for example mashinery; we hardly do any hard labour these days. So is it really right for us to think that we are smarter than our ancestors?