What crucial point is made about the evidence presented in Passage 1?

The crucial point made about the evidence presented in Passage 1 is that most of it is based on assumptions. This indicates that the arguments put forward may lack the solidity that comes from empirical evidence, making them potentially less persuasive or credible. When evidence is rooted in assumptions, it suggests a reliance on subjective interpretations or personal beliefs rather than objective analysis. This can lead to vulnerabilities in the argument, as such evidence can be easily challenged or criticized for not being founded on concrete, verifiable data.

In contrast, evidence that is well-supported by statistics would present a more robust foundation for making claims, while emphasizing cultural significance points to an evaluative perspective that may or may not directly relate to the core assertions in the text. Additionally, introducing new scientific claims would suggest progression or innovation in thought, rather than the use of assumptions that might hinder credibility. Therefore, the emphasis on assumptions highlights the need for a critical examination of the evidence in the passage.