Problem
People deal with uncertainty in a variety of ways. As a specific example, consider this midterm exam. While the exam is meant to take only 80 minutes, you do have a deadline for completing the exam. But given the uncertainty - for example, today is the day that your laptop dies or today is the day that UCSD WiFi finally gives up for good - you will (hopefully) not wait till 80 minutes before the deadline to start your midterm.
a) If everyone follows this rule ("add buffers to handle uncertainty"), then how can any project get delayed?
b) Critical chain offers the theoretical foundations for how and when buffers need to be allocated in projects. Where does it suggest that we add buffers in a project, and why?