The Sh’daar, it seemed, were as terrified of temporal paradox as they were of technological singularities. The grandfather paradox. It was as well established in the realm of scientific myth as Schrödinger’s cat. Build a time machine. Travel back to the past and kill your grandfather. You are never born, hence you can not travel back in time and your grandfather lives, so you do build the time machine and you do kill him, and on and on and irreconcilably on.
