He has made a body of work that fluctuates hugely, from astonishing gems to experiments best forgotten.
In an economy where so many jobs are now offered on a temporary, part-time or variable-hours basis, where the numbers of hours worked fluctuates wildly from week to week, any job that offers a structure and a career is both rare and highly desirable.
Instead there is what the free market economist Milton Friedman termed a "natural rate" of unemployment, where nobody stays out of work for long, unemployment fluctuates between 5% and 6% with jobless workers quickly being hired in growth sectors of the economy.
Other economists have spoken of a higher "natural rate" of unemployment, where nobody stays out of work for long, with joblessness fluctuating at between 5% and 6%.
Sir William Beveridge, the architect of the welfare state, thought it should be 3% of the economically active population but other economists have spoken of a higher "natural rate" of unemployment, where nobody stays out of work for long, with joblessness fluctuating between 5% and 6%.
An article on May 31 about the fluctuating values of works by contemporary artists, including Larry Rivers, misidentified the materials used on a cardboard box created by Mr. Rivers that was sold at auction last year.
As with any artist's work, it fluctuates: there are great pictures and interesting ones, some enduringly powerful and some tired and slipshod (the Standing Form obsession of the 1950s and 1960s).
"An artist's work might fluctuate wildly on the market, changing hands between collectors several times without any permission of, or compensation to, the artist.
Some participants mentioned that their work engagement fluctuated daily and related to daily job resources.
In the first section of the work icy notes clang across the keyboard at fluctuating speeds; in the second they swarm in masses of nervous tremolos.
