Noticed a crash report in Spokane News:
South Sullivan and South Ball Dr, Vehicle Collision Reported.
Inevitably some smartass will comment: South and South can’t intersect!
Well, the smartass is wrong. Street geometry is sometimes euclidean and sometimes elliptic. Parallel streets often intersect.
Here’s the intersection mentioned, way out in the East Valley.
Ball is mainly a vertical street so it counts as South. If it had been mostly horizontal it would be counted as East.
There are lots of north-north intersections in my neighborhood because the diagonal Boulevards intersect with North streets constantly.
In this map North Driscoll intersects North Alberta, North Lindeke, North Milton, North A and North C. At the bottom, only partly visible in this view, Driscoll is formed where North Alberta and North Cochran merge. Non-euclidean geometries don’t allow parallel lines to mate and bear offspring. Real geometry, like real life, does it all the time.
At a larger scale elliptic geometry conflicts with euclidean in a genuine way, requiring some jury-rigs to maintain the euclidean fiction.
Polistra's Mill 