"Why Not" is a person that emails some participants. Originally it was thought that "why not" was Jack but that doesn't appear to be the case.
Important Stuff to Know Edit
This person corresponds on rare occasions but has an interesting e-mail "andthenitwaseleventhirtyeight".
Oct 10th emails: It has been heavily inferring/ directly claiming on that it kills for fun.
It was Squirrel all along.