But he also recalls that many of modern society's most unsustainable values have been transmitted by advertising.
An overvalued asset leveraged unsustainable paper value to buy huge tangible revenues.
When speaking privately, officials concede that Greece's debt, trading at only about 40 percent of its face value, is unsustainable and that lenders will probably have to write some of it off.
Bubbles are episodes of collective human madness — euphoria over investments whose skyrocketing values are unsustainable.
The mess was made years ago, when bad loans were made and the ready availability of credit was driving house values to unsustainable levels.
The default also played into wider fears that global stock markets had risen to unsustainable levels and company values did not reflect the continuing fragility of the world economy.
Asset-price bubbles occur after swift price rises set values at unsustainable levels, which then collapse.
Though DrKoop.com's original business model proved unsustainable, few have doubted the value of a trusted, free source of accurate, up-to-date consumer medical information.
Adding up all those pieces paints a picture of a company whose business model is both unsustainable and high on alienation value, complete with an overcompensated executive suite, questionable accounting and opacity.
This market failure (i.e. where the market price of the pollination service does not reflect its true value) could promote unsustainable landscape use since both managed and wild pollinators are dependent on natural and semi-natural landscapes as forage, particularly during off-season.
