All of these creative ideas and decisions about new ways to reach the consumer can be tracked with regard to how well they are working, whether and how they are building awareness for the product, how well they motivate the consumption of the product, and so on.

The manager's job - the impresario's job - is to preside over the company's efforts to jam so the business runs really well.

Now jamming - which is about collaborative improvisation - has to do with getting people together to be creative musically. But it is a very powerful metaphor for understanding the grammar of the creative process. It applies to business and to other pursuits as well.

The creative process is different from the traditional production and work-flow process. It is not so linear.

The impresario function is about intervening with the company's more administrative management structure. It is about trying to establish a sense of boundaries and budgets and milestones and so forth on a project that does not necessarily lend itself to milestones. It is about translating between the intimate interior environment of the creative work team and the company's need to make money. And finally, it is about positioning the fruits of the creative process in the marketplace and selling them.

A large part of the impresario's job has to do with maintaining and communicating standards of performance. Knowing how to set those standards - which are often more subjective than analytical - means knowing how to communicate the difference between something that is great and something that is just O.K.

In a large pharmaceutical company, where it's a big bet, you're going to need finance people to be involved in the decision-making because the investment can run into the hundreds of millions of dollars. You're going to have to run scenarios. You might even need agreement from the C.E.O. to make that type of decision. If it's an incremental, low-cost decision in a marketing-oriented company, it may be a very different set of stakeholders a lot further down in the organization.