However, many critics point out that the usefulness of sociobiology as an explanatory tool breaks down once a trait is so variable as to no longer be exposed to selective pressures.

• 这是符合社会生物学者身份的。然而，许多评论家指出，如果一个性状是如此易变的东西以致于它不再遭受到选择压力，那么，社会生物学作为一种解释工具就失效了。