One of the proofs that is commonly given to the authenticity of the Giving of the Torah at Mt. Sinai is the Kuzari Principle, as outlined by R. Yehuda HaLevi in his book HaKuzari.
The crux of the proof is (in oversimplified short form) that the story of the Revelation was witnessed by millions of people and the knowledge of that information was transmitted from parent to child, generation after generation. Anyone trying to invent such a story anywhere along the way would have been proven a liar, hence the story must be true.
There are a number of problems with the Kuzari Principle, which I don't really want to get into in this post. Instead, I want to address one particular point in the argument -- the transmission from parent to child.
This transmission is vital to the proof. Implicit within the argument is that the child hears about the from their parents... or, in other words, that the parents/teachers are the transmitters of the information. This differs from, say, reading information in a book which could have been written by anyone and may or may not contain the truth.
However, I've got to wonder if we haven't reached the stage where most people's primary knowledge about the Revelation isn't from their parents but is, in fact, from the Torah itself. If their knowledge of the Revelation comes from having read the Torah and not from their parents, then how is it different than anything else read in a book?
Or am I making some sort of a logical error here?