I need very few parts of modern technology to be happy. 1. Warm, dry, safe place to poo at my leisure (I actually don't have this right now ... shared bathroom with two adolescent boys and my partner). Other than that I'm still good with maps/compass when need be. I prefer wood stoves. Both of my vehicles are stick. One doesn't really need a battery to start ... only needs to be pushed. I still buy dictionaries. I don't buy encyclopedias, though. And I know how to research without the internet. That said ... I don't know how to skin an animal. I buy my meat at a butcher. We get veggies and fruits from a farm. And our milk and eggs are from a local dairy that delivers. I've never killed an animal on purpose except as an act of mercy. I dumped my smart phone a couple years back. Really I prefer the ability to create distance from people rather than the proximity on-demand. My personal batteries recharge with alone time and discharge around people. So I guess I could probably be transferred technologically back to around ~1950 and still be somewhat functional and useful to society as is.