One, inaction can also cause harm.
Two, relying on logic has created the most genocidal events in history, the World Wars.
Quote from name:O)MasterJohnny
What poison said is absolutely illogical. It cannot go both ways. If you do nothing, nothing happens. Doing something with misinformation can be disastrous. If you were a doctor and you make a misdiagnosis you can potentially harm the patience. Unreasonable cause can have negative effects. Lack of evidence is a good reason to do nothing because neutrality can produce no harm. But when people use blind faith and dogma, historically, unreasonable actions have lead to different genocides and other atrocities all in the name of some belief.
You assume that there is only one action, and one inaction- while we live in an environment filled with actions, or inactions. In this kind of sticky situation, inaction may also cause harm. Inaction, may also be used against you in court. Inaction, is a very bad thing.
Do, and have a slight chance to live. Or don't and die. Doctors do not always have certain answers. They always look for possibilities, and give medications, treatments mostly out of guessing. Same symptoms have various causes, and some symptoms are not easily detectable. But of incomplete data, doctors still do. Because inaction will cause more harm then action will.And last but not least, logic is a belief too. If everything goes by logic, a lot of things like genocide? They will all be justified. Africans? They always war on each other, hungry, begging bastards. It would be more efficient if they were wiped off the map.
Prisoners? Human trash, they are better off if they didn't exist. We'd be better off killing them, inhumanely. It would be more efficient, logical, and undisputably cheap.
Gays, Lesbians? Are they animals, or Human? Such trash. It would be better if they were eradicated, like any other pests.
Muslims? Oh they like to suicide- die, well we'd gladly make them die.
North Koreans? Well, one government has caused us more harm, money then their lives cost. It would've been better if we had bombed them years ago. Well, it shouldn't be too hard now.
You know what the religion of Logic is? Nazism. Totalitarianism. Nationalism. Patriotism. Look where that got us.
None.