Keith Dowding is unusual in that he has influentially written in both political philosophy and mainstream empirical political science. Dowding is best known for his work on 'power', applying insights from formal analysis to central debates on the nature of power and structure of power in society. Expanding on Brian Barry's concept of 'luck' ("getting what you want without trying") he argues that some groups of people are 'systematically lucky' in that they are advantaged because of the way society is structured. Such people are not powerful in the sense they have resources that they could use that other groups do not (though they might have this power 'as well') but rather systematically lucky in that they tend to get what they want without having to do anything. Alternatively, other groups are systematically unlucky. This argument has caused great controversy with critics including Brian Barry, Steven Lukes, Peter Morriss and more recently Andrew Hindmoor.