Having read so many differant views I thought I'd find out myself- basically "it would appear that what shoe man would have actually achieved is far from certain "-quote - blown a hole in the aircraft or set a fuel tank off-explosives behave differantly each time and the air pressure around them is just one factor-whether he had explosive in both shoes- in what quantity and whether both shoes would have exploded is another unknown and the result again by no means certain " the problem likely to have an effect in a -pressurised tube -is the sudden lack of oxygen and the shock, wave again the actual result not certain. One things for sure - the cabin crew and pax involved deserve a medal