Abstract: This case documents decision analysis for the Brainet project in Cerebrosoft. Brainet is the newest proposed product in Cerebrosoft. Charlotte, CEO, major shareholder and founder of Cerebrosoft, feels uneasy about this particular product launch, because the company’s financial capabilities are already rather stretched due to its rapid growth during the past three years. A poor product launch for Brainet would cost the company a lot of money, something that is not available right now due to the investments Cerebrosoft has recently made. Charlotte must be very careful of chosing the appropirate sales strategy under the uncertain level of different competition (high, medium, or low) that develops from other companies. Key words: market analysis; sales forcasting; decision analysis; prior probabilities; post probabilities 1.版权所有：本案例由华中科技大学管理学院黄威编写，版权归作者和华中科技大学管理学院所有。未经允许，本案例的所有部分都不能以任何方式与手段擅自复制或传播。 2.本案例授权中国管理案例共享中心使用。 3.由于企业保密的要求，在本案例中对有关名称、数据等做了必要的掩饰性处理。 4.本案例只供课堂讨论之用，并无意暗示或说明某种管理行为是否有效。