Newsweek‘s good nontechnical discussion of some implications of quantum theory, including one particularly astounding and troubling quantum paradox: We have long accepted that an observation affects the observed event, but it now appears that the effect occurs even if the observation is not until after the event has taken place. In effect, the future “leaks into the present”. This is not a relativistic problem (Einstein taught us that simultaneity is not absolute and varies from one frame of reference to another) but something far stranger.