A good deal of European, American, and Asian knowledge has been produced in colonial situations; in any case it is unclear whether I or the people I study are in the colonial role. The Asian, North American, and European physicists-mostly men-I study are obviously in a position to resist the attentions of this white woman. I "study up," to use Laura Nader's graphie phrase.' We all know that physicists have more power-intellectually, institutionally, financially, politically, and socially-than anthropologists and historians; it does not much matter that some of us might not want their power. The power dynamics that saturate everyone's research might be more noticeable to those of us who seem to be on the bottom, where the epistemological and gender dynamics conventionally merge.