 Lukes suggests another, more radical, explanation for the essentially contested nature of the concept of power: our conceptions of power are, according to him, themselves shaped by power relations. As he puts it, “how we think about power may serve to reproduce and reinforce power structures and relations, or alternatively it may challenge and subvert them. It may contribute to their continued functioning, or it may unmask their principles of operation, whose effectiveness is increased by their being hidden from view. To the extent that this is so, conceptual and methodological questions are inescapably political and so what ‘power’ means is ‘essentially contested’…” (Lukes 2005, 63). The thought that conceptions of power are themselves shaped by power relations is behind the claim, made by many feminists, that the influential conception of power as power-over is itself a product of patriarchal domination (for further discussion, see section 4 below).