Something else that Kevin "Galaxy Map" Jardine brought up recently: there's a "travelling salesperson lab" at University of Waterloo, and they took some of Kevin's work and played with it.
https://twitter.com/galaxy_map/status/1318092187972866048
https://www.math.uwaterloo.ca/tsp/star/index.html
https://www.math.uwaterloo.ca/tsp/star/about.html
https://www.math.uwaterloo.ca/tsp/star/gaia1_data.html
https://www.math.uwaterloo.ca/tsp/star/kj37859.html
https://twitter.com/galaxy_map/status/1318092187972866048
https://www.math.uwaterloo.ca/tsp/star/index.html
https://www.math.uwaterloo.ca/tsp/star/about.html
https://www.math.uwaterloo.ca/tsp/star/gaia1_data.html
https://www.math.uwaterloo.ca/tsp/star/kj37859.html