So, since I know jack about computers and even less about quantum computers, I wanted to ask those who know a bit more: What kind of effects do you think the introduction of quantum computers will have on civilization? When do you think they will first be introduced (into commercial use)? How do you think they will change things like science (esp. medicine, astronomy etc), our daily lives, societies in general etc? The scope could be, say, in the next few decades up to a hundred years or so. I added the expansion in parentheses because I'd also like to hear predictions / discussion on brain-computer interfaces (MMIs, DNIs, STIs, BMIs, whatever you want to call it) and how soon do you think they will become a part of our daily lives, how they will change individual lives / societies etc. For instances, where do you think they will be used? -recreational purposes (controlling cell phones, computers, TVs, cars etc) -military purposes (controlling projectiles, vehicles etc) -medical purposes Other uses? The last thing I'd like to learn more about is nanotechnology: What kind of an effect do you think it will have on our daily lives when it becomes more common? How soon do you think we'll have nanorobots curing diseases, improving ballistic vests / clothing, removing stains from clothes etc. on a daily basis? What applications do you think will be among the first to be commercialized on a grander scale? I put this under "Science Fiction" because so much of it deals with the future and sci-fi, but I think it's best to give the discussion free reins as long as it's related to the subject.