Line-Drawing

If we improperly reject a vague claim because it's not as precise as we'd like, then we commit the line-drawing fallacy. Being vague is not being hopelessly vague. Also called the Bald Man Fallacy, the Fallacy of the Heap and the Sorites Fallacy.

Example:

Dwayne can never grow bald. Dwayne isn't bald now. Don't you agree that if he loses one hair, that won't make him go from not bald to bald? And if he loses one hair after that, then this one loss, too, won't make him go from not bald to bald. Therefore, no matter how much hair he loses, he can't become bald.