Notice that my original claim was never that DNA analysis can be used to determine a persons behavior with certainty, rather it can be used to determine if a person is inclined to certain behavior, inclination being a keyword. Also, your response used the keyword 'predict', which I interpreted to mean 'take a guess at, based on available information' Predictions do not need to be 100% accurate. And we can predict a persons behavior by analysis of their DNA with more accuracy than we can predict their behavior by random guessing.