Among Appalachian Trail “thru-hikers” — that special class of backpackers dedicated (or obsessed) enough to walk the trail’s full 2,200 miles — the question of whether to carry a tent is hotly debated.

Thru-hikers tend to fall into one of two factions. Some (albeit a minority) insist a tent is unnecessary because the trail is punctuated with wooden shelters, or lean-tos, every 10 miles or so. As a rule, these hikers tend to travel light, cook simply or not at all, and sleep in the lean-tos or other shelters on the trail. But other hikers pride themselves on being self-sufficient: They prefer to camp in a tent far from other people; they carry detailed maps; they would never hitchhike into town just to grab a milkshake. We do not have a precise word for these two personality types. Not yet.

Since returning from my own through hike of the Appalachian Trail in 2009, I’ve begun to see these two approaches to life pervading every facet of our society. We could call the one “endarkic” and the other “exarkic” (from the Greek word arkeo, “to suffice”). In political science or economics, the word autarky is used to describe a state of self-sufficiency. Endarky is rather the drive toward self-sufficiency; exarky, its inverse.

We all know what an endarkist looks like. America has practically mythologized the type. Most of our best-known nature writers were vocal proponents of endarky: John Muir tramping off with a crust of bread tied to his belt, Thoreau hammering together a cabin beside Walden Pond, Edward Abbey advising his readers to “brew your own beer; kick in your TV; kill your own beef.”