If we are talking about only 100,000 people to start out with we are talking at LEAST a few thousand years. You have to figure the population has to get to a certain point before technology even becomes a want, let alone a need. Also take into account how disease and lack of medical care will impact the growth of that population.
Deep down all the human male wants to do is eat and screw. Until there is competition for either of those needs advancement will remain stagnant. Population will have to increase to the point that some guy has to go above and beyond to get laid and get a steak. That's our true starting point for the beginning of technology. Once the "need" for advancement is met there will need to be a substantial population to convert the natural resources and actually build. It will take a long long time to populate the world to have enough people needing technological advancement to force them to work to gather these resources... In other words... Slavery. The human race hits a glass ceiling at some point until they begin forced labor and add violence to the mix.
It's a far more complex and complicated matter than wanting an iPhone.
