If there is a possibility of several things going wrong, the one that will cause the most damage will be the one to go wrong.
Arthur BlochThe Ninety-Ninety Rule of Project Schedules - the first ninety percent of the task takes ninety percent of the time, and the last ten percent takes the other ninety percent.
Arthur BlochWhen working on a project, if you put away a tool that you're certain you're finished with, you will need it instantly.
Arthur Bloch