I came across a funny example of problem formation yesterday (cc @Meaningness).
@thilogross, a researcher in Bristol (where I live), showed that Bristol's version of the Königsberg bridge problem (https://en.wikipedia.org/wiki/Seven_Bridges_of_K%C3%B6nigsberg …) *is* soluble, and walked the resulting 33 mile circuit...
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I used to run along that park road regularly! Lovely views. I had my only sighting of a Cuckoo alongside that road.
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Geez, you are making me homesick!
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