Question: An article in The Wichita Eagle (24 June 2003, p. 4A) read as follows: Scientists have analyzed autopsy brain tissue from members of a religious order who had an average of 18 years of formal education and found that the more years of schooling, the less likely they were to exhibit Alzheimer's symptoms of dementia. The study provides the first biological proof of education's possible protective effect. Do you agree with the last sentence, that this study provides proof that education has a protective effect? Explain.