Take away technology and you have a bunch of smart people who will recreate it and improve it in the process.
Technology is just the product of understanding, and this is what differentiates modern human beings from those who occupied this planet millenia ago. Understanding the mechanics behind how and why things work and understanding why things behave the way they do. We also have a better understanding of our context in the universe. The paradox of understanding is the greater it is the greater the scope of what we do not understand and this is one of Feynman's points. The ancients who wrote the Bible and Qu'ran did not doubt. They were certain that what they believed and what was true were the same thing. I've said this before but the facility with which our context is dismissed warrants repeating it. The context of the ancients who wrote the Bible and Qu'ran was exceedingly narrow and this is reflected in the words they wrote.
All Christian and Muslim religions are based 100% on their religious books. Dilutions have happened, yes, but the holy books themselves have carried the two main religions through the ages and all schisms and fractions have been on the basis of mere interpretations of them - or in the case of the Bible and Constantine, what was allowed to be included in the Book and what was not allowed. The clearly ludicrous stuff was thrown out and no modern Christian gives them any credence, in much the same way that modern Christians give no credence to parts of the Bible they throw out themselves.
It comes down to what you are prepared to believe, what you are prepared to allocate to uncertainty and what you are prepared to allocate to cognitive dissonance. There are many people on this board who believe that Jesus is Lord but who dismiss as complete fiction entire parts of the Bible. And different people reject different parts, but they nevertheless hold fast to the central pretext because to do otherwise would introduce doubt and uncertainty and not knowing, and that is something they can't live with. One might ask them at what point do you stop hiving off and rejecting as fiction parts of the Bible and keeping the rest? Where do you stop? At what point is it that so much of the story has been cut away that the rest of it collapses? The answer is fundamentalism, because without the acceptance of the whole story to support it, it all comes tumbling down. It is what keeps the Watchtower in business.
In the end it begs the question what keeps you believeing in Yahweh or Allah (certainty, knowing) when there is so much evidence that neither exists?