Scientists prepare to send a signal to the past...

<span id="bodytext" class="georgia md"></span>"... <span id="bodytext" class="georgia md">the presence of conscious  observers later in history could exert an influence on those first moments [after the Big Bang],  shaping the laws of physics to be favorable for life. This may seem circular:  Life exists to make the universe suitable for life. If causality works both  forward and backward, however, consistency between the past and the future is  all that matters. "It offends our common-sense view of the world, but there's  nothing to prevent causal influences from going both ways in time," [Paul] Davies  says. "If the conditions necessary for life are somehow written into the  universe at the Big Bang, there must be some sort of two-way link."</span>

More mind-bending speculation over at <a href="http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2007/01/21/ING5LNJSBF1.DTL" target="_blank">SFGate</a>