Asked how long a piece of work will take, people give an answer that is too short, and th give i again af a dec of evid to t contrary. T reason i not opti about thems in general. It is that planning a task means imagining the task going as described, and nothing in that picture contains the interruption, the missing file or the second opinion that has delayed every previous attempt. Asked instead how long similar work has taken before, the same people answer accurately.

Type only the missing letters. Each box is one letter, and the number of boxes matches the letters that are missing.