It's Monday, 9:02. The team is on the call, the tracker is on the screen, and the first thing anyone says is: "That's not right, the Henderson row. We shipped that Thursday." So someone edits the cell. Then someone else points out that the launch date in column F moved last week and nobody updated the dependent rows. Ten minutes in, you haven't discussed a single decision. You've been proofreading a spreadsheet, live, with eight of your most expensive people watching. If that