The Handy Dandy machine would teach us that it is not essential to human agency that you understand how your choice is realized or that you in fact do anything to realize it. The intervention of magic allows the moment of choice to be isolated from the (mysterious) process by which that choice is to be made effective in the world. It is also isolated from what comes before choice; the options for action that you are to choose from are already there, presented to you without involvement on your part.
