But rather than relying on the financial markets to turn contributions into fatter pension benefits, notional schemes work on an actuarial formula that takes account of how well the economy has done and how long someone is expected to live.
The answer to that is to work longer: indeed, notional accounts automatically encourage people to retire later as populations age.
In "Reclaiming the Imagination," a blog post at the Times site last week, the philosopher Timothy Williamson wonders, "Why did humans evolve the capacity to imagine alternatives to reality?" (I'd rather suggest that the very construction of notional reality is itself a work of imagination).
In the third and final phase of Cézanne's life's work, according to my notional diagram, he pushed the notion of corporeality further still.
The system would be far more sustainable if the retirement age rose to about 65.Moreover, if China's elderly wanted to carry on working past the notional retirement age, its social-security system should allow them to do so.
Stated that way, Mr. Fischer's remarks stand in marked contrast to the German notion of Regietheater ("director's theater"), which has seen standard repertory operas interpreted in styles that drastically deviate not only from conventional representations, but also from the notional content expressed by the works themselves.
Their length is regulated by working out the notional height of an amputee athlete.
Despite his work, the revolution remains notional.
The reform relies instead on a reserve buffer fund, inherited from the previous system, and an "emergency brake" to reduce returns if necessary.Notional accounts are not likely to work well everywhere.
The show's young curators, Joachim Pissarro, of the Department of Painting and Sculpture, and Eva Respini, of the Department of Photography, have grouped works by formal or notional affinity rather than by chronology.
