Think about this,
Say you have a camcorder, and you record a video with sound....
Ten years later,.... You play back that video...
Well, you are watching a recorded moment in history.
You SEE what happened that moment ten years ago, you HEAR what happened that moment.
It only APPEALS to TWO of your senses....
SIGHT and SOUND..
Think about it.... Is that not, in essence... TIME TRAVEL??!?