[diggernet]

I really like that a lot, but it needs more awareness of geography as it relates to human travel. In particular, main road networks and major waterways. A district should not count as compact if it is not contiguous via major roads, avoiding toll bridges and ferries whenever possible. And it should have a resistance to crossing major rivers.

For example, Richmond and Sausalito should not be in the same district, and the Sacramento river should be a divide at least as far up as Antioch and Rio Vista.

Likewise, Vashon Island in WA should not be split across 2 congressional districts, but (since too small to be a district on its own) should be entirely in one of the districts it has a ferry connection to. And Puget Sound should be a hard divide.