The machinery of destruction is complete, poised on a hair...

The machinery of destruction is complete, poised on a hair trigger, waiting for the 'button' to be 'pushed' by some misguided or deranged human being or for some faulty computer chip to send out the instruction to fire. That so much should be balanced on so fine a point--that the fruit of four and a half billion years can be undone in a careless moment--is a fact against which belief rebels.