 In our original Driving case, ex ante justification seems to delivers the intuitively correct result. When he views the prospects in advance, Bob may well conclude that the very small risk of death is outweighed – from his own perspective – by the large number of benefits he is almost certain to enjoy. If the imbalance is sufficiently great, we might conclude that it would not be reasonable for Bob to reject a principle that permits driving. (Some extremely risk-averse individuals will perhaps still object to driving, but contractualists can reply that this rejection is not reasonable.)