Like you said, what remains may no longer be as we know it, but then again humanity has gone through so many paradigm shifts (and the shifts are accelerating due to technology) that it would be surprising if civilization was the same 50-100 years from now.
Like you said, what remains may no longer be as we know it, but then again humanity has gone through so many paradigm shifts (and the shifts are accelerating due to technology) that it would be surprising if civilization was the same 50-100 years from now.