One possible system of weighting or aggregating is to use a democratic or some other social choice procedure (Chakraborty 1996). The basic idea would be to encourage or prescribe that the relevant group of people decide on the weights. In some contexts, such as small-scale projects or evaluations, such capability weighting (and selection) could be done by participatory techniques. It has also been suggested that we may determine the weights of capabilities as a function of how much they contribute to overall life satisfaction or happiness (Schokkaert 2007). Yet this raises the question to what extent functionings are taken to be merely instrumental to another end, such as happiness, or indeed any other ultimate good or ideal.