Unquestionably, one must pursue the development and refinement of ever-improving systems and the technology to consistently and capably deliver these but, in considering Geoffrey's 1% dilemma, I recognise that to mitigate all risk, all of the time (by whichever means) is quite simply an unattainable goal in any given arena.
Let's say one was able to eliminate Geoffrey's 1%. This in itself is still no assurance of guaranteed performance on the day a live emergency presents itself. Factors as varied as the personal disposition of a particular crew on a particular day and as random as localised weather, may conspire in an attempt to defeat successful responses to both normal operations as well as emergency scenarios.
For me, the Sumburgh accident throws-up as many questions about the implementation of specific elements of CRM (such as the monitoring of primary flight information and crew communication) as it does about the parity of crew and technology.