How convenient for you to just sweep tradition under the rug, to get on with your own thesis. "When they saw the Greek-Syrians coming, the Jews would hide their books, take out their dreidels, and trick the Syrians into thinking they were just playing a game." Why not believe it!? The Romans cruelly subdued the Jews. They wanted to break the spiritual connection Jews felt to God. As long as Jews would behave in a reformed way they were left alone. Only when they insisted on learning the Torah - the holy Torah as THEY saw it, was it hazardous to their life. So the kids "played" to fend off the murderers. No they probably did not have to hide their "books". There were no printing presses in those days. Probably one of them held a parchment and the others looked on - as Jews do until today in Yemen.
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