Remember the Wait Block and Wait Time mode.
Next task after you've brought the cup from a water dispenser to a human and you've seen how the cup behaves and how it falls sometimes it is important to mention one more thing and this is what happens if you place and how to use the robot if you place the cup on the buttons. You can't start them. You can't start the robot. You can't press the buttons. So, let's see what we can do.
This is a companion discussion topic for the original entry at http://www.fllcasts.com/episodes/406-ev3-phi-task-use-wait-for-when-the-cup-is-over-the-robot-buttoms