> Doesn't technology stay fairly constant going back in history? For how long did we only have fire and rocks? The point is, it always progresses forward, exce

> Doesn't technology stay fairly constant going back in history? For how long did we only have fire and rocks? The point is, it always progresses forward, except in rare cases where a population is completely lost, though the rate of change has varied widely. I m sure even fire-building would have been somewhat refined before the neolithic era.