Final answer:
Rosellini in 'Into the Wild' exhibited extreme commitment to his principles of simplicity and demonstrated significant ingenuity and self-reliance, reminiscent of Thoreau's experiment in 'Walden,' though with distinct personal intentions and results.
Step-by-step explanation:
Based on the excerpt from Jon Krakauer's Into the Wild, two inferences that can be drawn about Rosellini are: First, Rosellini displayed an extreme level of commitment to his ideals, as indicated by his meticulous elimination of all but the most basic tools from his life. Second, he had a high level of ingenuity and self-reliance, as he was capable of creating necessary tools from materials found in the environment. We can compare his actions to those of Henry David Thoreau in Walden, who also sought to live simply and rely on himself, though their motives and outcomes differed.