Well I am not very smart, see my photo, but that is interesting. I know it is a shot list and I guess zero is even so being very discrete . . .
In[3]:= n := 0
In[6]:= Case[{n, n + 1}, n]
Out[6]= Case[{0, 1}, 0]
wait . . .
In[3]:= n := 0
In[7]:= Case[{n, n + 1}, n + 1]
Out[7]= Case[{0, 1}, 1]
