People enjoy being right, so continuing to use a website that gave a good first impression helps to 'prove' to themselves that they made a good initial decision. The phenomenon pervades our society; even doctors have been shown to follow their initial hunches, Lindgaard says, relying heavily on a patient's most immediately obvious symptom when making a diagnosis. "It's awfully scary stuff, but the tendency to jump to conclusions is far more widespread than we realize," she says.