Lions are courageous but not wise. If lions are courageous but not wise, then D3 is false. Therefore, D3 is false.
V is a virtue if and only if V is wisdom about good and evil.
Aristotle's Argument against STV 1. Weak-willed people have knowledge of good and evil but lack certain virtues. If weak-willed people have knowledge of good and evil but lack certain virtues, then virtue is not just wisdom about good and evil. If virtue is not just wisdom about good and evil, then STV is false. Therefore, STV is false.