He smiled a little. "I understand preferring the past, I have found that I prefer the past as well which would be why I teach it.  The only thing is I do not know what is necessarily true and what has been obscured by the Nation to bend the will of the citizens to its own agenda.  History has been rewritten some and the parts that haven't been have been forgotten.  Thank you for helping me...the people of my time deserve to know what really happened.  He heard her comment about hydro engines and grinned a little, "yes...we have cars that run on purified water, hence the hydro part of the name and you may hold the camera if you wish...I just doubt I can replace the pieces if it gets broken so try to be careful.  Her confession about being the living ghost should have surprised him but it made things seem to fit better so he merely smiled a little. "I would love to hear how it happened...if you do not mind telling me."