'There are two principal views [of the law of undue influence]. The first is that the focus... is upon the position of the claimant and that the basis upon which the court gives relief is the impairment of the claimant's decision-making process caused by his excessive reliance or dependence upon the defendant. The second view looks rather to the position of the defendant and requires some "wrongful" conduct...' (McKendrick.) Critically evaluate the law of undue influence in the light of the statement above.