Roald Amundsen

Became the first person to successfully navigate the Northwest Passage (1903-1906) and, on 14 December 1911, the first to reach the South Pole -- a full month ahead of a competing expedition.

Deliberately learned and adopted specific Inuit survival techniques -- animal-skin clothing in place of heavy wool, dog-sled travel, and efficient igloo construction -- during his 1903-1906 Northwest Passage voyage, then directly transferred these techniques to his later, higher-stakes South Pole expedition, rather than relying on conventional European polar-expedition methods.

After rival explorers' 1909 claims to the North Pole, secretly redirected his fully-funded, publicly-announced North Pole expedition toward the South Pole instead -- keeping the true objective hidden from almost everyone, including his own crew and financial backers, with real personal financial ruin at stake if the gambit failed.

Making this kind of high-stakes, secretive strategic pivot, with real personal cost if it failed, is the basis for the profile's risk_tolerance score. Risk Tolerance