Military × Interstellar Travel

The design choice a science fiction author makes about faster-than-light travel is, whether they know it or not, a decision about military structure. Niven and Pournelle's Alderson tramlines in *The Mote in God's Eye* create chokepoints—"narrow sea gates such as Suez, Gibraltar, Panama"—and so they get a navy that looks like the Royal Navy circa 1890, with fleet actions at fixed positions and admirals who think in terms of controlling passages. Donaldson's gap drive in *Chaos and Order*, by contrast, allows travel to any point but with terrifying imprecision—"tiny fluctuations in power or hysteresis became large shortfalls or overshots"—which means no chokepoints, no blockades, and piracy becomes structurally unbeatable, because the ocean has no straits. Stross's *Singularity Sky* and Cherryh's *Cyteen* push this further: when your drive interacts with causality or imposes ten-year communication lags, military hierarchy itself dissolves, because orders from command arrive as history rather than instruction. The old Clausewitz line about war being politics by other means reverses here—the physics engine *is* the politics, and every author who designs a drive has already written their war before a single shot is fired.