Since the publication of Gettier (1963), many accounts of knowledge have been proposed, but few have withstood the test of time. Of the various proposals, two have emerged from the fray in relatively good shape, although not entirely unscathed. One of these is a modal account. While there are different ways of developing a modal account, the most common proposal in the contemporary literature explains knowledge in terms of safety. More precisely: Safety: S's belief amounts to knowledge if and only if it could not have easily been false i.e., if and only if in all relevantly close worlds where S forms a sufficiently similar belief, S's belief is true. 2,3