On 19-7-2018 2:55, Bald Eagle wrote:
[snip]
> What's the scale of the scene, and will +/- 460 feet be in any way significant?
> 
> 

...except as an intellectual exercise? I was going to answer like you 
did. I certainly believe that - except for very highly specific and 
specialised uses - this would be overkill. Why bother? Because the /true 
shape/ of the Earth is not even like that: it looks more like an 
(oblate) potato and its generalised, irregular, shape differences are 
certainly more than +/- 460 feet.

-- 
Thomas

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