Regarding Edward Pershey's note: it would be just as well if the
interactive floor does NOT lead you back to Edison's invention of the
motion picture--because he did NOT "invent" the motion picture at
all--he stole and sometimes bought others' ideas and eventually hopped
on the movie projection bandwagon after he found that peep-show viewers
were a dead end. (See Gordon Hendricks, The Edison Motion Picture Myth.)
I hope the exhibition in question does not actually say Edison
"invented" movies because he definitely didn't. He was just an important
entrepreneur. I think this bit of "revisionism" has been accepted by
most motion picture historians for decades, so I hope no museum is still
supporting the old mythology.