Giving examples, explain how scientific research is not the same as common sense.

B'cos sientific research need sientific data,a lot of resource to support the idea,the conclusion is logic and professinal,it's unlike the common sense,sometimes the common sense is not presice and incorrect.For example,V often think the HIV virus are infected by blood,Body fluid and Natural dissemination.This is common sense.But,by Sientific research,the Sientist anounced recently,the HIV virus are only infected by blood and Natural dissemination,not body fluid.

给个例子，解释科学研究怎么不同与一般的事情