long ago i set out with the simple goal of eliminating all possible incorrect choices in a search for x , but have until this point eliminated only a few of the possible incorrect outcomes , and am slowly realizing that a successful search for x may be more easily accommodated by finding the person of whom it can be said , the person knows x , and inquiring of that person whether the proposition the person knows x is indeed true , and if so , then inquiring of the person about whom knowing x is true , where it is that x lives .