COMING THIS WEEK

Monday: Is the world ready for a robotic surgeon? A Sacramento company is proving that it is with Robodoc, a computerized machine that helps perform hip replacement surgery, The Cutting Edge reports. Also, a special Mac Smart column asks: Whither Apple after the latest crisis?

Tuesday: The Motley Fool, sponsor of the popular investment Web site, bring its irreverent yet informative touch to The Times’ Wall Street, California pages. The new weekly feature will include a variety of short investment reports and reader contributions, including a column, “My Dumbest Investment” or “My Smartest Investment.”

Also Tuesday: Consultants explain how to calculate the value of your stock and how to establish credit card processing for mail order businesses. Find out more in Small Business.