Leaving environmental use rights, i.e. the right to emit CO2, with members of Group A will increase their relative income and their willingness to pay and hence climate change impacts must be economically valued in a rather modest manner. Instead, giving environmental use rights, i.e. the right to demand an end to CO2 emissions, to members of Group B will increase their income and their willingness to pay, and hence climate change impacts will need to be valued in a more substantive manner. This is the representative value of the probability distribution.