That's a geography lesson in practice, even as we slice into the concept of Unicode and its antecedent ASCII.
The ideas of subsets, unions, intersections, are worth reinforcing in the context of this unicode point system.
Not all prefixes / subdomains in pycon.org have to be country codes. apac.pycon.org is more regional.
br.pycon.org points to a wiki page (in Portuguese) but then Brazilians have not been branding their flying circus event as a Pycon, whereas the Australians have.
Many geek Pythonistas are old enough to have young adult children growing up within Python Nation.
At the most recent Pycon in Santa Clara, we had lots of gnu math teachers there to explain more about unicode and geography.
The place was packed (about 1000 more than originally planned for -- fortunately the Convention Center is spacious, like Portland's).
B. Spatial Geometry (planar a sub-case):
I've continued to hoe the Martian Math row. I've noticed more than a few imitators, some of whom flatter me.
This is more Literature Department than Mathematics in that we're exploring science fiction as a space for the collective imagination to plan for / anticipate change.
I take up the different ways in which ETs have been treated in the literature, and in that context introduce an "alien" spatial geometry that comes with different props and exercises than they (the students) have probably been exposed to in their schools for Earthlings.
I ran this at Reed College last year and have an invite to run it at University of Portland this year.
Edgar Allan Poe feeds into our mix, along with a bevy of other writers. His essay "Eureka" is a transcendentalist work. (per panel discussion GWU / 2005).
Not that all of our heroes and role models are literary figures. Linus Pauling, Muhammad Ali, Bayard Rustin... Allison Randal, Richard Stallman... plus lots of companies (Canonical, Idealist, Urban Airship...).
Quaker schools / libraries / values have been influential (some special relationship with Grays?)
I've written about Occupy Portland and designs around Washington High School, where Linus Pauling went as a boy, back when he was living at our think tank building (ISEPP).
A group that meets there (Wanderers) knows a lot about my work with Python Nation as well as with the Ministry of Education we set up around OPDX in order to provide some follow-through experience for new recruits.
The Pauling House and the Quaker Meetinghouse on nearby Stark both owe a lot to Electroscientific Instruments (ESI). Doug Strain, a founder of ESI, had been a student of Linus Pauling.
Their factory building, earlier Jantzen's, later morphed into the Friends meeting house.
Lew Scholl, one of the Friends, has created good quality Google Earth 3D versions of both Pauling House and Stark Street Meetinghouse. He comes to Wanderers sometimes.