"This is
the most important slide in the entire talk. So, if you want to leave after this slide, I will not be offended, because it is all downhill from here."
https://youtu.be/oTugjssqOT0?t=1256 (Timestamped link of the "Time Management" talk by Randy Pausch, which is what the OP PDF is from)
That part in the talk is about the "Eisenhower Matrix", popularized by Steven Covey in "The 7 Habits of Highly Effective People", on the importance of prioritizing important, non-urgent tasks over urgent, unimportant tasks.
You can read about it here as well, but I haven't seen it put as well as Randy Pausch did in his talk. https://evernote.com/blog/work-effectively-with-the-eisenhow...
PS If you haven't seen his "Last Lecture", it's also fantastic. I watch it about once a year to re-center myself, and remember to focus on the truly important things in life. https://youtu.be/ji5_MqicxSo
