I disagree with most(?) of you. Seemed to have plenty to fill 2 hours, and the whole point was that it was being done from first principles rather than copying what had been done before – it was about the science, not a historical re-enactment. As for doing it quicker the first time – wasn’t the opposite actually the case – BW had rather longer to sort his design out, along with having rather less constraints in terms of risking damaging aircraft. As for the final drop being a failure – the “bomb” was dropped at a distance from the damn, bounced several times and sunk down the damn to a point it would have destroyed it had it been live – how is that a failure? I’m sure GG wasn’t too bothered with the finer points of how hard the bombs hit the damn.
far too much emphasis on stressing how dangerous everything was
Maybe that’s because it was all rather dangerous (in civil aviation terms) – in ways not immediately obvious. I found myself wondering how they got clearance to do that (or indeed if they did actually have clearance to do what they did – could imagine the person who signed it off being rather shocked watching that!)