When Foucault wrote about power-knowledge (or knowledge-power) he always used the word, “savoir,” never “connaissance” (a foreign concept to Americans). …
“Connaissance” is the word French people use when they refer to their knowledge of each other. Native English speakers have a curious way of thinking of people as manipulable resources, as if “knowing my wife” was somehow similar to “knowing motorcycle maintenance.” In most of the rest of the world, people see these as fundamentally different things (not different kinds of knowledge—that’s “English think”—but different things entirely). Subjects (e.g., wives) and objects (e.g., motorcycles) are unlike. If you have “connaissance” of a person, you have “know-why” not know-how. That is, you have a concise way of interpreting why she says what she says.