Also called the Continuum Fallacy. This is a variation of the False Dilemma Fallacy.
This fallacy presents the alternatives as: Either there is a precise line to be drawn, or else there is no line to be drawn (no difference) between one end of the line and the other.
JOhn is not rich. If someone gives him one dollar, he is not going to become rich. If he is given two dollars, he is not going to become rich. So how many ever dollars he is given he is never going to be rich. What if we were to give him twenty million dollars one by one very quickly? Of course, he would become rich. But since we cannot point to the precise dollar that makes him rich, he can never get rich (so the fallacy)
Lets say Prasad is not bald now. If he loses one hair, he will not get bald. If he loses one more hair after that, the loss of the second hair does not make him bald. Therefore how many every hairs he loses, he can never be called bald. The crux of the argument is that if we are unable to precisely define after losing how many hairs Prasad can be called bald, Prasad can never be called bald