In Glasgow Corporation v. Muir [1943] 2 A.C. 448, Lord Macmillan said: “The standard of foresight of the reasonable man is in one sense an impersonal test. . . Some persons are by nature unduly timorous and imagine every path beset with lions; others, of more robust temperament, fail to foresee or nonchalantly disregard even the most obvious dangers. The reasonable man is presumed to be free both from over-apprehension and from over confidence.” In the light of this statement, and with reference to decided cases, examine the factors to which the courts commonly have regard in determining the standard of care in negligence.