The ethical, societal, and political issues of Mars settlement seem like very distant problems, both spatially and temporally. However, there is a certain urgency to these matters. Whatever humanity does in the coming decades will affect generations upon generations of future humans and other living beings, as well as their environments. The initial agreements about how resources are governed and what kind of regime is established can persist for a long time. There can be a “Founder Effect” in space. This (...) engenders questions about where to begin. Are the primary goals scientific, political, or economic? Will they be realised through international cooperation, or as a private enterprise? Will the first steps be taken in a just manner and for the common good? A settlement can become “locked-in” to initial technological, economic, behavioural, or political solutions, or caught in path dependencies. Inertia can take hold. Moreover, the process of designing and planning Mars settlements can itself become locked in this way, burdened by problematic histories, colonialist ways of thinking about settlements, and problematic values. It may even be the case that humans are neither technologically nor socially ready to settle other worlds. (shrink)