None of them could be reproduced quickly by people who had not undergone the same learning process.

The Wrangel Island expedition demonstrated this with terrible clarity: four men with Western educations and some Arctic experience died, while an Iñupiat woman with partial cultural separation from traditional knowledge — but enough innate capacity and cultural residue to reinvent portions of it under pressure — survived.

The climate researchers who came to consult Iñupiat hunters about sea ice behavior in the twenty-first century were drawing on the same knowledge system — the same accumulated intelligence about an environment — that had kept Iñupiat communities alive for thousands of years.

When Ada Blackjack built her skin boat on Wrangel Island, she was not improvising.