Andrew Sullivan muses on the underlying etiologies of sexual orientation in an essay in the Sunday Times of London. Powerful information is a double-edged sword, with potential for good and ill, depending on how it is applied and what your viewpoint is. This may be especially true for something as basic and intrinsic as sexual orientation, where the potential for eugenic applications is very real. Mr. Sullivans highlights the issues, considers the implications and asks many of the right questions. It's worth a read.