Objectivity by researchers has not, and probably never will be attained. People will always have biases; some will be created by cultural values and others by personal views. The search for objectivity lies in the realm of philosophy along with the search for reality. Even though objectivity can never be reached, people are better at making observations, discoveries, and decisions if they attempt to set aside their biases.
As I have learned in my Theory of Knowledge class, perception and thought are intimately connected. While the same rays of light may enter two different peoples eyes, what they see may be very different. The brain takes the input from the eyes and processes it to form an image. That image is not the only thing the brain produces; it also provides extra information based on generalizations and bias. This unconscious addition of information changes the observation of an object. By attempting to reduce the addition of extraneous information being added to the observation, by being objective, a true observation of an object can be more closely approximated.
Discoveries, especially in the scientific realm can be doubly