The Four-Color Problem and Its Philosophical Significance (1979) [pdf](thatmarcusfamily.org)
thatmarcusfamily.org
The Four-Color Problem and Its Philosophical Significance (1979) [pdf]
http://www.thatmarcusfamily.org/philosophy/Course_Websites/Math_S08/Readings/tymoczko.pdf
Pre pdf, printouts of the paper were on continuous paper and my memory is a lot of the exemplar map examples were included in the draft as an appendix, begging the question if anyone was seriously arguing they'd find errors by looking at them.
"What does a mathemantical proof mean when a machine writes it and a machine verifies it" was a reductive but unanswerable position. "It's not very satisfying" was the mood along with "expect a lot more of this in the future"