- Clear up the terminology
 
  -- Kernel, process/application/user program

- Explain that each window on the screen is a program, touch on GUI

- Why do we see it smoothly? 
  
  -- How many cycles does each program get? Imagine we send a timer interrupt 100 times a second?
   
     --- Get to cycles and instructions

  -- How many programs do we run in a system 

     --- ps -aux | ....

- Compare http performance (online test -> find machine -> find cpu)