Alien Pitfalls

Over the years I've read quite a few alien stories. Heck, I've even written a couple myself. As I see it, the easiest alien story is one where all the characters and the location are alien. In other words, everything is "not us". In that case, you don't have to decide what the characters know--or don't know (or understand). They'll all be familiar with the same references. Kama Sutra Lovers is