Any set of decisions about design is inevitably influenced by cultural prejudice, no matter how intent an architect might be to avoid it.

Renzo Piano and Richard Rogers's Centre Georges Pompidou of 1971-1977 - the true prototype of the modern museum as popular architectural spectacle - wound up costing so much more than planned that the French government solved the shortfall by cutting support for several regional museums.

Architecture traditionally has been the slowest of art forms. It was not unusual for great cathedrals to take centuries to complete, with stylistic changes from Romanesque to Gothic or Renaissance to Baroque as common as the addition of chapels or spires. But because the function remained the same, the form could be flexible and its growth organic.

Winning the Pritzker assures a flood of work in one's seventies and eighties, jobs necessarily carried out by assistants as the demands of modern-day cultural stardom and the inevitable waning of physical capacities prevent many architects from attaining the transcendent final phase more easily achieved by artists in other mediums.

The magnificent lobby of the Chrysler Building - faced with rare marbles, aglitter with decorative metalwork, and surmounted by a ceiling painted with a totemic image of the tower itself - leads to elevator cabs inlaid with exotic woods in fanciful patterns. The entire route from street to office is invested with ceremony, dignity, and delight.

Cost overruns are not uncommon in architecture, particularly for designs that depart from structural or technological norms, or demand a finer quality of execution than commercial schemes - conditions typical of buildings for cultural institutions. Budgets are exceeded for many reasons, not all of them within an architect's control.

During the modern period, the vanguard architect has usually relied on small residential jobs both to supply a steady income and to serve as 'sketches' for ideas that are often later translated to the larger scale of public commissions.