When one cardiologist was asked whether or not his partaking in high fat meals set a bad example he replied, "Not me, because I took my name tag off."
Isn't it amazing how we separate our behavior from our knowledge?
We can hear something, even accept it as true, and never let it change our behavior. Its funny when we are talking about doctors & researchers. It's terrible when we are talking about folks who hear and accept the Word of God and yet live lives of disobedience.