 The currency of central capabilities (see Nussbaum 2006; Petz 2018) is highly similar to basic needs. Other currencies differ in relevant ways (Meyer &amp; Pölzler forthcoming). For example, the currency of preference-satisfaction (whatever these preferences happen to be) (see, e.g., Arrow 1963; Goodin 1995; Singer 1979) measures well-being not in objective, but in subjective terms: what a person prefers is contingent on mental states, namely on the preferences of this person. Also, the direction of future changes in preferences is difficult to predict; it is possible and plausible that future persons will have (fundamentally) different preferences than persons living today. The currency of impersonal resources (i.e., goods that can be used to produce many kinds of benefits; for example, income and wealth) (see, e.g., Barry 1989a; Rawls 2001) faces a different problem: people’s levels of impersonal resources do not necessarily correlate with levels of well-being realized. Impersonal resources are unreliable indicators of well-being (see Page 2007b: 457–458; Sen 1982: 19–21, 26–30).