I'd be grateful for any evidence to test my hypothesis that 
the Nagasaki bomb-aimer deliberately saved scores of thousands of 
lives by dropping that bomb a few miles from the instructed aim 
point.  The fireball was in fact over a shallow valley slightly 
higher than, as well as off to one side from, the city centre.

	Possible explanations I'm aware of include:-

*  he knew his actual aim point was a few mile off, and would save some lives
*  ditto, and had a particular desire to hit a main centre of the 
R.C. church for the whole of Japan  -  the Urakami cathedral
*  he got a glimpse thru broken cloud of what he thought was the 
racetrack which had been one of his aiming aids, but what he was 
actually seeing was a stadium in the 'upland valley' suburbs.  This 
would entail an honest mistake, not a deliberate mis-aiming.

R