What Are Twins?

When our daughter [who is NLD} was about 8 we watched the movie parent trap.  After the movie we tried to explain that it was one girl who through the ability of special camera's was able to be filmed and play both roles in the movie.  We went over it many times and explained it in many different ways.  After all this our daughter said to me "Now mommy which girl is really the real one?"

A devoted mom