Imagine that we have a perfect, error-free measure of intelligence that uses something like headphones to measure a person's actual mental ability. Suppose that this brain probe test is scored along the same scale as standard IQ tests: 100 is average. Now, imagine two 30-year-old city dwellers (from Atlanta, say) who had had similar upbringings without any special experience outside of typical urban life, and one of these people had a brain probe IQ of 95 and the other had a brain probe IQ of 140. If we dropped these two Atlantans separately into the Alaskan wilderness in January, who would be more likely to survive and be rescued? On what do you base your conclusions?