A common measure of poverty is how much money you have in relation to other people - that is useful as far as it goes, but that excludes the case of, say, a hunter in the rainforest who has no money but is not poor. And there can be a number of people with money but who can consider themselves unwanted or invisible or estranged from society.William T. Vollmann
Only when the design fails does it draw attention to itself; when it succeeds, it’s invisible.Donald Norman