Problem:

Since the my first encounter with doraemon manga, I've been wondering many things, one of them is the small light.

Assuming we had an instrument, such as small light, which enabled people to grow and shrink as they wanted to, what would be the smallest and the most compact functional form of a person?

First, I can rule out that we couldn't be as small as an atom because we couldn't be function as human being if we were compressed into 1 atom. So did 1 molecule. and so did 1 cell.

Second, you need more than 1 cell to construct organs, i.e. I couldn't imagine an eye which consists only several atoms or molecules.

Therefore, there should be a limit to the the size of human organs in order to fully retain their functions and thence, there should also be a limit to the minimum size of human organs.

Required:

Question 1: What are the limits of size of each of human organs?

Question 2: What are the limits of size of human then?

Could someone explain this to me?