Mortimer J stated in CPE15 v Minister for Immigration and Border Protection [2017] FCA 591 at [60]:
The “reasonably foreseeable future” is something of an ambulatory period of time, but the use of reasonable foreseeability as the benchmark concept indicates that the assessment is intended to be one which can be made on the basis of probative material, without extending into guesswork. It is also intended to preclude predictions of the future that are so far removed in point of time from the life of the person concerned at the time the person is returned to her or his country of nationality as to bear insufficient connection to the reality of what that person may experience. The purpose of the “well-founded” aspect of the Art 1A test is, after all, to be an objective but realistic and accurate assessment of what risks a person may face in the practical “on the ground” circumstances she or he will be living in. Using “reasonably foreseeable” also carries with it a rejection of an assessment which becomes too remote from a person’s expected life circumstances. These are not matters which can be expressed sensibly with any more precision