circumvented the problem of the existence of multiple attributes by reducing
what is basically a two-dimensional problem (both health and income matter) to a one-dimensional
problem. He introduced the concept of “healthy-equivalent consumption”. This is basically equal
to the individual’s income minus his willingness to pay for perfect health. By converting the health
dimension into an income dimension, Fleurbaey rephrased the two-dimensional problem into the
income space and then the usual conditions for a social welfare function defined over distributions
of income apply. In that sense, the results of Section 3 can also be applied to Fleurbaey’s rephrased
problem.