Understanding the terms Project Risk Management is key to manage projects. Select any assigned readings from the worldwide standards PMBOK Guide (PMI, 2013) or "Practice Standards" (PMI, 2009). assigned for session 2 to cite. Then explain why "estimating" (durations or projected budgets) can be one of the riskiest aspects of any project and why a PM needs to understand how to estimate time-on-task to mitigate schedule and/or scope risks.