Answer:
Because of their own bias and prior understanding and knowledge. Hope I helped!
What kind of short story? If your gonna ask for help at least include more details
Answer:
I believe that it was Macbeths servant
Explanation:
Because when the murder happened (scene 3 line 2) the first murderer ask who sent the third murderer in the murder of banquo and the third murderer said macbeth. Hope that this will help anybody that needs that question answered :)