"Summary: The ability to map numbers onto a line is universal. But for an Amazonian tribe, this mapping is not linear but logarithmic. The finding illuminates b

"Summary: The ability to map numbers onto a line is universal. But for an Amazonian tribe, this mapping is not linear but logarithmic. The finding illuminates both the nature and the limits of the human predisposition to measurement, a foundation for science, engineering, and much of our modern culture." The original title ("Slide Rule Sense: Amazonian Indigenous Culture Demonstrates Universal Mapping Of Number Onto Space") is too long for HN and doesn't mention the (to me) most interesting thing of it being logarithmic; so I came up with this title but would welcome a suggestion of a better one.