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In The Art of Awareness, J. Samuel Bois reports the following experiment: A psychologist employed seven assistants and one genuine subject in an experiment where they were asked to judge how long was a straight line that they were shown on a screen. The seven assistants, who were the first to speak and report what they saw, had been instructed to report unanimously an evidently incorrect length. The eighth member of the group, the only naive subject in the lot, did not know that his companions had received such an instruction, and he was under the impression that what they reported was really what they saw. In one-third of the experiments, he reported the same incorrect length as they did. The pressure of the environment had influenced his own semantic reaction and had distorted his vision. When one of the assistants, under the secret direction of the experimenter, started reporting the correct length, it relieved that pressure of the environment, and the perception of the uninformed subject improved accordingly. QUESTION 1. To what extent does our sense knowledge depend on what we think we should be seeing?