Although it is impossible to not be influenced by our own personal experiences and biases when reading a text, we should always try to minimize this as much as possible. If we let ourselves be too influenced by our own biases, we run the risk of interpreting the text in a way that is not the one that best reflects the author's purpose. We should always try to be as objective as possible in order to more fairly judge the merits of the arguments we are reading.
Depends on the type of material. If the material is meant to be emotional and based on opinions then yes definitely but if the material is historical or strictly from a central point then no the reader should try to be unbiased from its point of view.
