This study puts cold water on any concerns that we are looking for a single ‘gay gene’ or a single environmental variable which could be used to ‘select out’ homosexuality - the factors which influence sexual orientation are complex. And we are not simply talking about homosexuality here - heterosexual behaviour is also influenced by a mixture of genetic and environmental factors.
根据拉老给出的文献，没有所谓的'gay gene'. 文章的结果是环境因素比基因因素重要得多．所以我们应该努力为孩子们创造一个减少同性恋发生的环境．
当然你还可以用以下两点argue:
1. 同性恋是正常的，所以不应该试图减少其发生
2. 相比隔离同性恋的环境，接触同性恋更能减少同性恋的发生
我对持以上两种观点的人表示很难理解．我一般只从很明显的常识出发，除非是在证明数学题的时候．