Inuit snow houses are engineered adaptations no single builder consciously designs

Evidence

Inuit snow houses are also a complex adaptation for living in many parts of the Arctic (see figure 7.2 ). Architecturally, these snow houses are unique in that they are constructed from snow blocks cut from drifts created during a single snowfall to form an aerodynamic dome-shape that can stand against strong Arctic winds. Properly constructed, with blocks cut to fit, this dome is strong enough for a person to stand on without danger of collapse. Heated by small soapstone lamps that are fueled with rendered fat from marine mammals, the insulating properties of snow mean that inside temperatures are 10°C (50°F). This internal warmth slightly melts the snow, thereby allowing the walls and ceiling to freeze together even more solidly. Properly oriented, the long tunnel entrance not only blocks the wind, but also uses pressure differences to create a heat trap. Windows, created from translucent membranes cut from seal guts or sheets of ice, provide light inside, and small holes maintain air circulation. — Joseph Henrich, The Secret of Our Success, 381

Categorization

• CANDY: A compact, fascinating engineering fact about snow houses — warm inside, built from blocks strong enough to stand on.
• XREF: connects to: Arctic survival depends on interlocking, non-obvious cultural techniques no individual could reinvent. — Joseph Henrich, The Secret of Our Success: How Culture…, 111; Arctic survival turned on borrowing local cultural knowledge rather than novel invention — Joseph Henrich, The Secret of Our Success: How Culture…, 115

Broader Connections

• Arctic survival depends on interlocking, non-obvious cultural techniques no individual could reinvent. #corroborates (0.88) — Joseph Henrich, The Secret of Our Success, 111
• Arctic survival turned on borrowing local cultural knowledge rather than novel invention #qualifies (0.75) — Joseph Henrich, The Secret of Our Success, 115