Talk:John Tilton Hack

dynamic equilibrium
I'm not convinced that this would be usable as a (relibale) source, but it does explain Hack's concept of dynamic equilibrium: http://uregina.ca/~sauchyn/geog423/models.html Maybe it's helpful when explaining what Hack's contribution was. Mduvekot (talk) 13:42, 12 April 2017 (UTC)