True story. Many years ago, I was lecturing on technology at a conference, and a man came up and asked me how he would know when he had reached the end of the Internet! I realized immediately there was not going to be any way to answer his question, at least in time allotted, so I simply said, “No problem, it will display a message for you that you have “Now, reached the end of the Internet.”
He walked away seemingly satisfied with the answer. Sometimes I wonder if he is still looking for the message to pop up in his browser.