I never said it was accidental, I think it was quite deliberate. But waiting 20secs just to hear the sound is a long time. They probably just didn’t want each explosion to take that long, the viewer might become bored, so I’m saying they said to hell with the 20secs, lets just make the audio and the visual simultaneous. What about the survivors testimonies? One Big Bang or an extended bombing by lots of aeroplanes? That’s what I was asking you! As I’m willing to believe that I/we might be easily fooled - show me how. To me, one mushroom cloud means one bomb. What other bomb was capable of producing such devastation in 1945? How many tons of tnt would be required, and how many aeroplanes carrying it. We all have our favourites David. This is not one of mine.