Editing A woman will give birth every day (section)

==== Brief Period - 21 Days ====
The Maharsha states that it's impossible to say that the pregnancy and birth of a child would occur on the same day. If this were the case, Rabban Gamliel's proof, where he showed a student a hen that lays eggs every day, would be insufficient. Even with a hen, the conception (when it is impregnated by the male) and the laying of the egg don't happen on the same day - there are twenty-one days between conception and the laying of the egg.

Therefore, Rashi explains that indeed the discussion is about two different children. On the same day that a woman conceives a new child, on that same day she will give birth to a child from a previous conception, like a hen.

But according to their explanation, there is still some difficulty: how could it be that she would give birth every day? After one birth, there are many days when intimacy is forbidden (since the laws of ritual purity and impurity will exist in the time of redemption). Therefore, it would be impossible to have births during all these days, which are seven or fourteen times more than the days when intimacy is permitted. So she cannot give birth every day.