Many people happily live on islands without modern conveniences or scientific innovations. All it takes is knowledge and skill in relying on and using raw materials and natural resources. Most your wondrous conveniences rely entirely on electricity and fuel of some sort, something that would be lacking on an isolated island anyway. Technology assumes a societal infrastructure of energy generation in order to be useful. It assumes a reliance on factories and stores where such gadgets and their parts can be manufactured, purchased, and serviced. Without all of this most all technology would be useless if not totally nonexistent. Let's see YOU survive on an isolated island with your refrigerator, your computer, your car, your electrical lights, your radio and TV, your microwave oven, your air conditioner, and your hairdryer. None of that would be of any use to you.