If you imagine the technologies that will define daily life in 50 years, it’s tempting to think of Arthur C. Clarke’s dictum that advanced technology is indistinguishable from magic. You might envision the world of 2069 bursting with things we would consider fantastical today.
The problem with that is, technologies don’t just magically appear. They come from the clever refinement and recombination of previously existing technologies. Even when powerful innovations do arise, it can take decades for them to replace old stuff that works well enough.