==Photo caption NPOV problems== 

 Consider the following pair of captions. Here, a "human" penis is contrasted with a "circumcised" penis, the implication being that only one is truly human. Clearly, this violates WP:NPOV. 

 *A human penis flaccid (left) and erect (right) 
 *A circumcised penis flaccid (left) and erect (right). 

 Now consider the next pair, in which "a penis" is contrasted with "a circumcised penis". Again, this violates NPOV, just as comparing "a black girl" with "a girl" would - a circumcised penis is also a penis. 

 *A flaccid (left) and erect (right) penis 
 *A circumcised penis flaccid (left) and erect (right). 

 Given two captions, we have two options: 

 *An uncircumcised penis flaccid (left) and erect (right) 
 *A circumcised penis flaccid (left) and erect (right). 

 (In which both are described using neutral adjectives that differentiate between the two.) Or: 

 *A penis flaccid (left) and erect (right) 
 *Another penis flaccid (left) and erect (right). 

 The first is more informative, and is my own preference.