There could be limits, but it would be easier to believe they are soft limits that don't come into play in the vast majority of human behavior. But what I real

There could be limits, but it would be easier to believe they are soft limits that don't come into play in the vast majority of human behavior. But what I really think the author is highlighting is a potential difference in perspective that accompanies participating in a culture that uses one set of concepts as 'primitives' and how that might lead to failures to understand another culture with different primitives. Not necessarily "we can't understand them", but "we don't understand them."