It depends on how doctors view IBM's magic black box. If they grow to trust and depend on it, that could become a real problem. People have a tendency to defer

It depends on how doctors view IBM's magic black box. If they grow to trust and depend on it, that could become a real problem. People have a tendency to defer, and have a bias towards deferring to machines that seemingly behave as accurately as a calculator would with basic arithmetic. A true crisis can arise if doctors can shift liability by claiming to have just followed Watson's results.