A challenge for any executive or manager is being able to identify the unbelievers.
The unbelievers are those who, although often eloquent and smooth, do not truly believe in the program. This can be the case even if the person's job is directly tied to the achievement of a certain aim. [I've encountered many equal employment opportunity officers who do not believe in equal employment opportunity and even more human resources professionals who hold enormous contempt for the organization's employees.]
A reason why it is important to know the depth of commitment is that it determines the credibility of the other person's words. There is a huge difference between the person who is simply going through the motions and one who is a passionate believer. Both groups require different strategies.
The most dangerous operators are not the consistent unbelievers but those who are willing to believe - or fake a belief - in anything out of sheer opportunism. They can shock you with their sudden and shameless shifts.