单项选择题According to the passage, mathematicians present a danger to scientists because ______.
单项选择题The author's attitude toward Sophocles's statement is ______.
单项选择题The author implies that scientists develop a healthy skepticism because they are aware that ______.
单项选择题Assumptions are important for critical readers because they can help readers to ______.
单项选择题What can we infer from the passage