“Very simple answer — from whence do you know that 3 million people stood at Har Sinai? The answer, of course, is the Torah. You cannot use the Torah as proof of the Torah’s claims.
My dear friend. you totally missed my point. It’s NOT JUST FROM THE TORAH that I know this. That’s my point. You can never make something up like that! Never! If you claim 3,000,000 people witnessed something you better make sure they did before people start asking you for a witness. So 3300 years ago when it was first stated that there was a ma’amid har sinai, there must have been SOMETHING, or this ridiculous claim would have been ignored and eventually disappear into oblivion, and judaism would have NEVER gotten off the ground. (think of what the first pesach seder would have been like if it was a fallacy.)