[It's not difficult to tell that the Millennium puzzle's presence still troubles Eleven]

.... Yes, and? [Trying not to push the other too much, but he was genuinely curious where the apprehension is coming from.] Oh...... well. Is that all? [Smiling a bit to himself. He didn't mean to dismiss Eleven's concerns but to him it made total sense why the puzzle appeared to someone like him]

Perhaps that is why the puzzle sought you out first. [Let him explain] ... It knew that you would not try to abuse it's powers. [Wasn't that in part why it had been entrusted to the Muto family's hands?]