Most accountants drive forward by looking into the rearview mirror instead of the windshield. They report on what was not what will be. Trend analysis allows you to forecast through the windshield as does comprehensive budgeting and variance reporting. A good accountant will also tell you when you can expect to run short on cash based on your sales projections or when you have become inventory heavy.
You expect your accountant to continually revise and fine-tune your business model as a vital member of your management team.