With an extensive skill set and knowledge base that is probably larger than everything you know about computers. How much of your life could you build from first principles?
She lives like someone in the Stone Age, it’s a metaphor. You’ve heard of those, right? They are a way of saying a thing by saying something that is not literally true - she does not have a time machine, or if she does she has been very good at concealing it - but in an interesting way that conveys the essential point the writer would like to make.
