HUH? Now every person who is in any sort of intellectual field is somehow under the evil influence of Darwin?
Science deals with facts, Sure there might be some speculation at 1st, But where ever the facts lead science will eventually follow. History and Sociology while yes they do deal with facts, their very nature means they will be always open for speculation and different interpretations by different people.
For example, Even if Charles Darwin never existed someone else would have come along seeing the same evidence and come up with same Theory of Evolution, while if someone say like Gibson who wrote "The Rise & Fall of the Roman Empire" never exsisted it's not likely someone would have come along and made the same exact conclusions he did.
And again, where is there any proof that Evolution had anything to do with this case?
Actually, someone did. Not just evntually, but before Darwin published.