This fallacy works in an argument by asking, is X possible? The goal being to force the other person to concede that it is possible and then to apply the common sense logic that something that can happen will happen. The fallacy in the argument is that concluding that it will happen implies that you should act accordingly. A humorous example of this is Murphy's Law: Anything that can go wrong will go wrong. What the fallacy ignores are the frequency, impact, and timescales. If something is possible but very unlikely (a once in a thousand year event) then for practical purposes you should not conclude that it will occur in your one year project.
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3) Critical Thinking: Testing which ideas are true > Anatomy of an Argument > Deductive Logic Arguments >