"Listen, no one on this thread seems to doubt that Dave did wrong, even with the possible alternate scenarios on dodgy fuel gauges. My crusade is that IF the gauges fatally confused him, this could happen again. Surely it is better to say, "we don't know if gauges were involved, but there is an element of doubt, let's fix that possibility".
Indeed, though I suppose if you keep convincing yourself you know everything that happened in the cockpit that night, and that
you'd never ever do x y or z because you're such a good pilot, it distracts you from the fear that one one it might happen to you.
Rakker, your English is better than some I have read on this board
and you make good points. If anything good comes out of this horror let it be lessons learned and changes made. Nothing else can.