How can users be assured that results of searches and searching of available materials is an accurate reflection?

I believe that all of us are responsible for critiquing the information that we receive. We are taught from earliest childhood to not believe everything we read, to question resources, and to search for different viewpoints, In the age of technology, that training is even more important as there is no assurance that the advice or information we seek comes from someone who actually knows. The human mind and its ability to compare bits of data turning it into information and finally knowledge has yet to be replaced. We must make our own judgments about  the accuracy and completeness of the information that we seek.