"A successful encounter, one that is not brief, but lasts, never guarantees that it will continue to last tomorrow rather than come undone. Just as it might have not taken place, it may no longer take place. . . . In other words, nothing ever guarantees that the reality of the accomplished fact is the guarantee of its durability. Quite the opposite is true: every accomplished fact . . . like all the necessity and reason we can derive from it, is only a provisional encounter, and since every encounter is provisional even when it lasts, there is no eternity in the “laws” of any world or any state. History here is nothing but the permanent revocation of the accomplished fact by another undecipherable fact to be accomplished, without our knowing in advance whether, or when, or how the event that revokes it will come about."
"...instead of thinking contingency as a modality of necessity, or an exception to it , we must think necessity as the becoming-necessary of the encounter of contingents."
