What is the logic behind Question or answer 20 question to move to 2nd level?

What is the logic behind Question or answer 20 question to move to 2nd level?

I want to know What is the logic behind Question or answer 20 question to move to 2nd level? as it seems so many people questioning and answering very irrelevant question and answers just because they must have to finish deadline to move to 2nd user level. I think this is absolutely unnecessary.