One potential problem that can occur with activity duration estimating is having omissions. What are three potential remedies for this problem? 1. 1. Rolling wave planning 2. Reverse phase schedule 3. Learning curve 2. 1. PERT 2. Milestones 3. Manage float 3. 1. Staggering project start dates 2. Resource leveling 3. Resource buffer 4. 1. Refining the WBS 2. Making checklists 3. Having someone play the Devil’s Advocate