> And noisy environment - a field is often table-top flat and empty of all obstructions. Perhaps this is true in certain parts of the country, but certainly wa

> And noisy environment - a field is often table-top flat and empty of all obstructions. Perhaps this is true in certain parts of the country, but certainly wasn't my experience growing up in the Southeast. The land there tended to be mostly rolling hills, basically no field was totally table-top flat. (And the 3rd paragraph in TFA mentions that the land there even in Kansas is hilly so he does the first pass). Obviously you want few obstacles to maximize the useful land area, but fields often had ponds, creeks, patches of trees that broke things up, not to mention unknown obstacles like fallen trees or fences, wild animals, etc. that happen 'randomly'. I'm actually curious how much of this the software can handle on its own. So it's certainly a different challenge, but to imagine most fields as perfectly empty, flat, continuous, homogenous spaces is to over simplify things.