I think you're underestimating how much we simply don't know about how to live that primitively. Maybe you could do it in small groups of people. Maybe up to a dozen. Most experiments at this fail hilariously early by the way.

Can you do it and sustain hundreds of people? I doubt it. At least they're here to be potentially observed. You don't have to _totally_ wing it. People living like that through history had bigger day to day survival concerns than documenting the finer details of sustaining their continued existence to us.