Objectivity means the state or quality of being true, and free of personal biases, interpretations, feelings, and imaginings. Relativism is the concept that points of view have no objective, absolute truth or validity. They have only relative, subjective value according to a particular frame of reference such as a language or culture.
Scientists must avoid personal biases, a priori commitments, and emotional involvement. A proposition is generally considered to have objective truth when its truth conditions are met and are free of bias caused by beliefs, hopes, wishes, or feelings. For scientific findings to be valid and objective, they must be testable, replicable, able to be communicated from person to person, and able to be demonstrated to third parties. There is always the possibility of deliberate misrepresentation of truth (for example in journalism), whether for gain, fame, or commercial or ideological motives.
Can any opinion, conclusion, scientific finding, appraisal, description, judgment, rule, or law be totally free of bias? All statements contain semantics, terminology, nuance, or subtlety which may be variously interpreted.
To avoid your unintentional error, an unverifiable truth should be prefaced with, ‘I believe that…’.